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Finding the Fourth Proportional to 424,965.06, 637,515.26 and 140,666

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Solution

The fourth proportional to 424,965.06, 637,515.26 and 140,666 is: 211,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,965.06 : 637,515.26 = 140,666 : x
  2. Step 2: Convert to fraction form
    424,965.06/637,515.26 = 140,666/x
  3. Step 3: Cross multiply
    424,965.06x = 637,515.26 × 140,666
  4. Step 4: Simplify right side
    424,965.06x = 89,676,721,563.16
  5. Step 5: Solve for x
    x = 89,676,721,563.16/424,965.06
  6. Step 6: Final answer
    x = 211,021.40

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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.