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Finding the Fourth Proportional to 256,543.20, 385,275.60 and 248,248.80

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Solution

The fourth proportional to 256,543.20, 385,275.60 and 248,248.80 is: 372,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,543.20 : 385,275.60 = 248,248.80 : x
  2. Step 2: Convert to fraction form
    256,543.20/385,275.60 = 248,248.80/x
  3. Step 3: Cross multiply
    256,543.20x = 385,275.60 × 248,248.80
  4. Step 4: Simplify right side
    256,543.20x = 95,644,205,369.28
  5. Step 5: Solve for x
    x = 95,644,205,369.28/256,543.20
  6. Step 6: Final answer
    x = 372,819.10

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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.