Home / 421,307.60-631,955.25-137,011.23

Finding the Fourth Proportional to 421,307.60, 631,955.25 and 137,011.23

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Solution

The fourth proportional to 421,307.60, 631,955.25 and 137,011.23 is: 205,514.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,307.60 : 631,955.25 = 137,011.23 : x
  2. Step 2: Convert to fraction form
    421,307.60/631,955.25 = 137,011.23/x
  3. Step 3: Cross multiply
    421,307.60x = 631,955.25 × 137,011.23
  4. Step 4: Simplify right side
    421,307.60x = 86,584,966,107.46
  5. Step 5: Solve for x
    x = 86,584,966,107.46/421,307.60
  6. Step 6: Final answer
    x = 205,514.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.