Home / 421,402,488,681.36-581,435,762,942.30-238,499,590,258.02

Finding the Fourth Proportional to 421,402,488,681.36, 581,435,762,942.30 and 238,499,590,258.02

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Solution

The fourth proportional to 421,402,488,681.36, 581,435,762,942.30 and 238,499,590,258.02 is: 329,073,023,885.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,402,488,681.36 : 581,435,762,942.30 = 238,499,590,258.02 : x
  2. Step 2: Convert to fraction form
    421,402,488,681.36/581,435,762,942.30 = 238,499,590,258.02/x
  3. Step 3: Cross multiply
    421,402,488,681.36x = 581,435,762,942.30 × 238,499,590,258.02
  4. Step 4: Simplify right side
    421,402,488,681.36x = 138,672,191,223,097,800,523,776
  5. Step 5: Solve for x
    x = 138,672,191,223,097,800,523,776/421,402,488,681.36
  6. Step 6: Final answer
    x = 329,073,023,885.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.