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Finding the Fourth Proportional to 576,421.52, 864,634.82 and 239,461.90

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Solution

The fourth proportional to 576,421.52, 864,634.82 and 239,461.90 is: 359,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,421.52 : 864,634.82 = 239,461.90 : x
  2. Step 2: Convert to fraction form
    576,421.52/864,634.82 = 239,461.90/x
  3. Step 3: Cross multiply
    576,421.52x = 864,634.82 × 239,461.90
  4. Step 4: Simplify right side
    576,421.52x = 207,047,091,282.87
  5. Step 5: Solve for x
    x = 207,047,091,282.87/576,421.52
  6. Step 6: Final answer
    x = 359,193.90

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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.