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Finding the Fourth Proportional to 254,479.47, 381,656.16 and 85,996.08

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Solution

The fourth proportional to 254,479.47, 381,656.16 and 85,996.08 is: 128,972.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,479.47 : 381,656.16 = 85,996.08 : x
  2. Step 2: Convert to fraction form
    254,479.47/381,656.16 = 85,996.08/x
  3. Step 3: Cross multiply
    254,479.47x = 381,656.16 × 85,996.08
  4. Step 4: Simplify right side
    254,479.47x = 32,820,933,667.85
  5. Step 5: Solve for x
    x = 32,820,933,667.85/254,479.47
  6. Step 6: Final answer
    x = 128,972.82

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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.