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Finding the Fourth Proportional to 518,877.38, 778,305.27 and 144,890.66

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Solution

The fourth proportional to 518,877.38, 778,305.27 and 144,890.66 is: 217,332.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,877.38 : 778,305.27 = 144,890.66 : x
  2. Step 2: Convert to fraction form
    518,877.38/778,305.27 = 144,890.66/x
  3. Step 3: Cross multiply
    518,877.38x = 778,305.27 × 144,890.66
  4. Step 4: Simplify right side
    518,877.38x = 112,769,164,251.78
  5. Step 5: Solve for x
    x = 112,769,164,251.78/518,877.38
  6. Step 6: Final answer
    x = 217,332.97

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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.