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Finding the Fourth Proportional to 386,181.90, 579,272.85 and 359,937.90

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Solution

The fourth proportional to 386,181.90, 579,272.85 and 359,937.90 is: 539,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,181.90 : 579,272.85 = 359,937.90 : x
  2. Step 2: Convert to fraction form
    386,181.90/579,272.85 = 359,937.90/x
  3. Step 3: Cross multiply
    386,181.90x = 579,272.85 × 359,937.90
  4. Step 4: Simplify right side
    386,181.90x = 208,502,253,156.02
  5. Step 5: Solve for x
    x = 208,502,253,156.02/386,181.90
  6. Step 6: Final answer
    x = 539,906.85

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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.