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Finding the Fourth Proportional to 256,325.70, 384,270.44 and 156,555.88

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Solution

The fourth proportional to 256,325.70, 384,270.44 and 156,555.88 is: 234,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,325.70 : 384,270.44 = 156,555.88 : x
  2. Step 2: Convert to fraction form
    256,325.70/384,270.44 = 156,555.88/x
  3. Step 3: Cross multiply
    256,325.70x = 384,270.44 × 156,555.88
  4. Step 4: Simplify right side
    256,325.70x = 60,159,796,892.19
  5. Step 5: Solve for x
    x = 60,159,796,892.19/256,325.70
  6. Step 6: Final answer
    x = 234,700.61

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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.