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Finding the Fourth Proportional to 254,473.52, 381,553.54 and 85,977.92

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Solution

The fourth proportional to 254,473.52, 381,553.54 and 85,977.92 is: 128,913.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,473.52 : 381,553.54 = 85,977.92 : x
  2. Step 2: Convert to fraction form
    254,473.52/381,553.54 = 85,977.92/x
  3. Step 3: Cross multiply
    254,473.52x = 381,553.54 × 85,977.92
  4. Step 4: Simplify right side
    254,473.52x = 32,805,179,307.95
  5. Step 5: Solve for x
    x = 32,805,179,307.95/254,473.52
  6. Step 6: Final answer
    x = 128,913.92

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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.