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Finding the Fourth Proportional to 614,436.80, 921,752.40 and 215,067.92

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Solution

The fourth proportional to 614,436.80, 921,752.40 and 215,067.92 is: 322,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,436.80 : 921,752.40 = 215,067.92 : x
  2. Step 2: Convert to fraction form
    614,436.80/921,752.40 = 215,067.92/x
  3. Step 3: Cross multiply
    614,436.80x = 921,752.40 × 215,067.92
  4. Step 4: Simplify right side
    614,436.80x = 198,239,371,423.01
  5. Step 5: Solve for x
    x = 198,239,371,423.01/614,436.80
  6. Step 6: Final answer
    x = 322,635.90

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1.5x scale

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.