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Finding the Fourth Proportional to 256,671.24, 385,000.32 and 69,677.88

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Solution

The fourth proportional to 256,671.24, 385,000.32 and 69,677.88 is: 104,515.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,671.24 : 385,000.32 = 69,677.88 : x
  2. Step 2: Convert to fraction form
    256,671.24/385,000.32 = 69,677.88/x
  3. Step 3: Cross multiply
    256,671.24x = 385,000.32 × 69,677.88
  4. Step 4: Simplify right side
    256,671.24x = 26,826,006,096.92
  5. Step 5: Solve for x
    x = 26,826,006,096.92/256,671.24
  6. Step 6: Final answer
    x = 104,515.04

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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.