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Finding the Fourth Proportional to 256,210.05, 384,550.17 and 129,938.13

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Solution

The fourth proportional to 256,210.05, 384,550.17 and 129,938.13 is: 195,026.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,210.05 : 384,550.17 = 129,938.13 : x
  2. Step 2: Convert to fraction form
    256,210.05/384,550.17 = 129,938.13/x
  3. Step 3: Cross multiply
    256,210.05x = 384,550.17 × 129,938.13
  4. Step 4: Simplify right side
    256,210.05x = 49,967,729,980.98
  5. Step 5: Solve for x
    x = 49,967,729,980.98/256,210.05
  6. Step 6: Final answer
    x = 195,026.42

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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.