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Finding the Fourth Proportional to 354,473.16, 531,553.68 and 129,775.20

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Solution

The fourth proportional to 354,473.16, 531,553.68 and 129,775.20 is: 194,605.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,473.16 : 531,553.68 = 129,775.20 : x
  2. Step 2: Convert to fraction form
    354,473.16/531,553.68 = 129,775.20/x
  3. Step 3: Cross multiply
    354,473.16x = 531,553.68 × 129,775.20
  4. Step 4: Simplify right side
    354,473.16x = 68,982,485,132.74
  5. Step 5: Solve for x
    x = 68,982,485,132.74/354,473.16
  6. Step 6: Final answer
    x = 194,605.67

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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.