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Finding the Fourth Proportional to 499,393.14, 749,007.70 and 215,007.12

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Solution

The fourth proportional to 499,393.14, 749,007.70 and 215,007.12 is: 322,475.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,393.14 : 749,007.70 = 215,007.12 : x
  2. Step 2: Convert to fraction form
    499,393.14/749,007.70 = 215,007.12/x
  3. Step 3: Cross multiply
    499,393.14x = 749,007.70 × 215,007.12
  4. Step 4: Simplify right side
    499,393.14x = 161,041,983,614.75
  5. Step 5: Solve for x
    x = 161,041,983,614.75/499,393.14
  6. Step 6: Final answer
    x = 322,475.36

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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.