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Finding the Fourth Proportional to 387,584.04, 534,801.18 and 215,497.20

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Solution

The fourth proportional to 387,584.04, 534,801.18 and 215,497.20 is: 297,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,584.04 : 534,801.18 = 215,497.20 : x
  2. Step 2: Convert to fraction form
    387,584.04/534,801.18 = 215,497.20/x
  3. Step 3: Cross multiply
    387,584.04x = 534,801.18 × 215,497.20
  4. Step 4: Simplify right side
    387,584.04x = 115,248,156,846.70
  5. Step 5: Solve for x
    x = 115,248,156,846.70/387,584.04
  6. Step 6: Final answer
    x = 297,350.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.