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Finding the Fourth Proportional to 256,197.61, 384,530.78 and 129,925.02

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Solution

The fourth proportional to 256,197.61, 384,530.78 and 129,925.02 is: 195,006.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,197.61 : 384,530.78 = 129,925.02 : x
  2. Step 2: Convert to fraction form
    256,197.61/384,530.78 = 129,925.02/x
  3. Step 3: Cross multiply
    256,197.61x = 384,530.78 × 129,925.02
  4. Step 4: Simplify right side
    256,197.61x = 49,960,169,282.12
  5. Step 5: Solve for x
    x = 49,960,169,282.12/256,197.61
  6. Step 6: Final answer
    x = 195,006.38

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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.