Home / 424,780.40-637,210.20-140,472.08

Finding the Fourth Proportional to 424,780.40, 637,210.20 and 140,472.08

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Solution

The fourth proportional to 424,780.40, 637,210.20 and 140,472.08 is: 210,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,780.40 : 637,210.20 = 140,472.08 : x
  2. Step 2: Convert to fraction form
    424,780.40/637,210.20 = 140,472.08/x
  3. Step 3: Cross multiply
    424,780.40x = 637,210.20 × 140,472.08
  4. Step 4: Simplify right side
    424,780.40x = 89,510,242,191.22
  5. Step 5: Solve for x
    x = 89,510,242,191.22/424,780.40
  6. Step 6: Final answer
    x = 210,721.22

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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.