Home / 254,456.10-381,684.15-129,780.90

Finding the Fourth Proportional to 254,456.10, 381,684.15 and 129,780.90

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Solution

The fourth proportional to 254,456.10, 381,684.15 and 129,780.90 is: 194,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,456.10 : 381,684.15 = 129,780.90 : x
  2. Step 2: Convert to fraction form
    254,456.10/381,684.15 = 129,780.90/x
  3. Step 3: Cross multiply
    254,456.10x = 381,684.15 × 129,780.90
  4. Step 4: Simplify right side
    254,456.10x = 49,535,312,502.74
  5. Step 5: Solve for x
    x = 49,535,312,502.74/254,456.10
  6. Step 6: Final answer
    x = 194,671.35

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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.