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Finding the Fourth Proportional to 256,881.43, 385,226.56 and 88,354.45

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Solution

The fourth proportional to 256,881.43, 385,226.56 and 88,354.45 is: 132,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,881.43 : 385,226.56 = 88,354.45 : x
  2. Step 2: Convert to fraction form
    256,881.43/385,226.56 = 88,354.45/x
  3. Step 3: Cross multiply
    256,881.43x = 385,226.56 × 88,354.45
  4. Step 4: Simplify right side
    256,881.43x = 34,036,480,834.19
  5. Step 5: Solve for x
    x = 34,036,480,834.19/256,881.43
  6. Step 6: Final answer
    x = 132,498.80

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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.