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Finding the Fourth Proportional to 330,398.08, 455,934.68 and 187,155.24

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Solution

The fourth proportional to 330,398.08, 455,934.68 and 187,155.24 is: 258,265.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,398.08 : 455,934.68 = 187,155.24 : x
  2. Step 2: Convert to fraction form
    330,398.08/455,934.68 = 187,155.24/x
  3. Step 3: Cross multiply
    330,398.08x = 455,934.68 × 187,155.24
  4. Step 4: Simplify right side
    330,398.08x = 85,330,564,459.72
  5. Step 5: Solve for x
    x = 85,330,564,459.72/330,398.08
  6. Step 6: Final answer
    x = 258,265.92

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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.