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Finding the Fourth Proportional to 341,904.20, 512,702.70 and 131,472.20

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Solution

The fourth proportional to 341,904.20, 512,702.70 and 131,472.20 is: 197,149.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,904.20 : 512,702.70 = 131,472.20 : x
  2. Step 2: Convert to fraction form
    341,904.20/512,702.70 = 131,472.20/x
  3. Step 3: Cross multiply
    341,904.20x = 512,702.70 × 131,472.20
  4. Step 4: Simplify right side
    341,904.20x = 67,406,151,914.94
  5. Step 5: Solve for x
    x = 67,406,151,914.94/341,904.20
  6. Step 6: Final answer
    x = 197,149.24

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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.