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Finding the Fourth Proportional to 435,646.10, 653,501.55 and 155,126.90

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Solution

The fourth proportional to 435,646.10, 653,501.55 and 155,126.90 is: 232,701.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,646.10 : 653,501.55 = 155,126.90 : x
  2. Step 2: Convert to fraction form
    435,646.10/653,501.55 = 155,126.90/x
  3. Step 3: Cross multiply
    435,646.10x = 653,501.55 × 155,126.90
  4. Step 4: Simplify right side
    435,646.10x = 101,375,669,596.70
  5. Step 5: Solve for x
    x = 101,375,669,596.70/435,646.10
  6. Step 6: Final answer
    x = 232,701.89

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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.