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Finding the Fourth Proportional to 636,034.10, 954,141.87 and 215,430.26

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Solution

The fourth proportional to 636,034.10, 954,141.87 and 215,430.26 is: 323,176.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,034.10 : 954,141.87 = 215,430.26 : x
  2. Step 2: Convert to fraction form
    636,034.10/954,141.87 = 215,430.26/x
  3. Step 3: Cross multiply
    636,034.10x = 954,141.87 × 215,430.26
  4. Step 4: Simplify right side
    636,034.10x = 205,551,031,130.99
  5. Step 5: Solve for x
    x = 205,551,031,130.99/636,034.10
  6. Step 6: Final answer
    x = 323,176.12

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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.