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Finding the Fourth Proportional to 341,891.40, 512,951.04 and 215,385.60

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Solution

The fourth proportional to 341,891.40, 512,951.04 and 215,385.60 is: 323,150.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,891.40 : 512,951.04 = 215,385.60 : x
  2. Step 2: Convert to fraction form
    341,891.40/512,951.04 = 215,385.60/x
  3. Step 3: Cross multiply
    341,891.40x = 512,951.04 × 215,385.60
  4. Step 4: Simplify right side
    341,891.40x = 110,482,267,521.02
  5. Step 5: Solve for x
    x = 110,482,267,521.02/341,891.40
  6. Step 6: Final answer
    x = 323,150.18

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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.