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Finding the Fourth Proportional to 452,502.40, 678,901.22 and 215,814.32

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Solution

The fourth proportional to 452,502.40, 678,901.22 and 215,814.32 is: 323,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,502.40 : 678,901.22 = 215,814.32 : x
  2. Step 2: Convert to fraction form
    452,502.40/678,901.22 = 215,814.32/x
  3. Step 3: Cross multiply
    452,502.40x = 678,901.22 × 215,814.32
  4. Step 4: Simplify right side
    452,502.40x = 146,516,605,141.47
  5. Step 5: Solve for x
    x = 146,516,605,141.47/452,502.40
  6. Step 6: Final answer
    x = 323,791.89

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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.