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Finding the Fourth Proportional to 439,488.96, 659,252.61 and 215,038.38

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Solution

The fourth proportional to 439,488.96, 659,252.61 and 215,038.38 is: 322,566.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,488.96 : 659,252.61 = 215,038.38 : x
  2. Step 2: Convert to fraction form
    439,488.96/659,252.61 = 215,038.38/x
  3. Step 3: Cross multiply
    439,488.96x = 659,252.61 × 215,038.38
  4. Step 4: Simplify right side
    439,488.96x = 141,764,613,265.17
  5. Step 5: Solve for x
    x = 141,764,613,265.17/439,488.96
  6. Step 6: Final answer
    x = 322,566.95

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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.