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Finding the Fourth Proportional to 387,247.28, 581,098.47 and 162,590.44

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Solution

The fourth proportional to 387,247.28, 581,098.47 and 162,590.44 is: 243,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,247.28 : 581,098.47 = 162,590.44 : x
  2. Step 2: Convert to fraction form
    387,247.28/581,098.47 = 162,590.44/x
  3. Step 3: Cross multiply
    387,247.28x = 581,098.47 × 162,590.44
  4. Step 4: Simplify right side
    387,247.28x = 94,481,055,920.63
  5. Step 5: Solve for x
    x = 94,481,055,920.63/387,247.28
  6. Step 6: Final answer
    x = 243,981.20

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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.