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Finding the Fourth Proportional to 387,287.76, 581,030.20 and 227,498.82

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Solution

The fourth proportional to 387,287.76, 581,030.20 and 227,498.82 is: 341,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,287.76 : 581,030.20 = 227,498.82 : x
  2. Step 2: Convert to fraction form
    387,287.76/581,030.20 = 227,498.82/x
  3. Step 3: Cross multiply
    387,287.76x = 581,030.20 × 227,498.82
  4. Step 4: Simplify right side
    387,287.76x = 132,183,684,884.36
  5. Step 5: Solve for x
    x = 132,183,684,884.36/387,287.76
  6. Step 6: Final answer
    x = 341,306.13

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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.