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Finding the Fourth Proportional to 390,600.48, 539,032.91 and 229,462.32

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Solution

The fourth proportional to 390,600.48, 539,032.91 and 229,462.32 is: 316,660.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,600.48 : 539,032.91 = 229,462.32 : x
  2. Step 2: Convert to fraction form
    390,600.48/539,032.91 = 229,462.32/x
  3. Step 3: Cross multiply
    390,600.48x = 539,032.91 × 229,462.32
  4. Step 4: Simplify right side
    390,600.48x = 123,687,740,937.64
  5. Step 5: Solve for x
    x = 123,687,740,937.64/390,600.48
  6. Step 6: Final answer
    x = 316,660.49

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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.