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Finding the Fourth Proportional to 381,726.70, 572,590.05 and 240,009.10

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Solution

The fourth proportional to 381,726.70, 572,590.05 and 240,009.10 is: 360,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,726.70 : 572,590.05 = 240,009.10 : x
  2. Step 2: Convert to fraction form
    381,726.70/572,590.05 = 240,009.10/x
  3. Step 3: Cross multiply
    381,726.70x = 572,590.05 × 240,009.10
  4. Step 4: Simplify right side
    381,726.70x = 137,426,822,569.46
  5. Step 5: Solve for x
    x = 137,426,822,569.46/381,726.70
  6. Step 6: Final answer
    x = 360,013.65

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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.