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Finding the Fourth Proportional to 254,016.90, 381,025.35 and 128,045.70

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Solution

The fourth proportional to 254,016.90, 381,025.35 and 128,045.70 is: 192,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,016.90 : 381,025.35 = 128,045.70 : x
  2. Step 2: Convert to fraction form
    254,016.90/381,025.35 = 128,045.70/x
  3. Step 3: Cross multiply
    254,016.90x = 381,025.35 × 128,045.70
  4. Step 4: Simplify right side
    254,016.90x = 48,788,657,658.50
  5. Step 5: Solve for x
    x = 48,788,657,658.50/254,016.90
  6. Step 6: Final answer
    x = 192,068.55

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Similar ratio
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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.