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Finding the Fourth Proportional to 296,878.20, 445,595.70 and 156,737.40

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Solution

The fourth proportional to 296,878.20, 445,595.70 and 156,737.40 is: 235,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,878.20 : 445,595.70 = 156,737.40 : x
  2. Step 2: Convert to fraction form
    296,878.20/445,595.70 = 156,737.40/x
  3. Step 3: Cross multiply
    296,878.20x = 445,595.70 × 156,737.40
  4. Step 4: Simplify right side
    296,878.20x = 69,841,511,469.18
  5. Step 5: Solve for x
    x = 69,841,511,469.18/296,878.20
  6. Step 6: Final answer
    x = 235,253.08

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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.