Home / 402,352,343.89-555,251,239.20-243,580,359.33

Finding the Fourth Proportional to 402,352,343.89, 555,251,239.20 and 243,580,359.33

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Solution

The fourth proportional to 402,352,343.89, 555,251,239.20 and 243,580,359.33 is: 336,143,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,352,343.89 : 555,251,239.20 = 243,580,359.33 : x
  2. Step 2: Convert to fraction form
    402,352,343.89/555,251,239.20 = 243,580,359.33/x
  3. Step 3: Cross multiply
    402,352,343.89x = 555,251,239.20 × 243,580,359.33
  4. Step 4: Simplify right side
    402,352,343.89x = 135,248,296,361,623,840
  5. Step 5: Solve for x
    x = 135,248,296,361,623,840/402,352,343.89
  6. Step 6: Final answer
    x = 336,143,925.63

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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.