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Finding the Fourth Proportional to 255,086.70, 382,630.05 and 239,340.30

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Solution

The fourth proportional to 255,086.70, 382,630.05 and 239,340.30 is: 359,010.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,086.70 : 382,630.05 = 239,340.30 : x
  2. Step 2: Convert to fraction form
    255,086.70/382,630.05 = 239,340.30/x
  3. Step 3: Cross multiply
    255,086.70x = 382,630.05 × 239,340.30
  4. Step 4: Simplify right side
    255,086.70x = 91,578,790,956.02
  5. Step 5: Solve for x
    x = 91,578,790,956.02/255,086.70
  6. Step 6: Final answer
    x = 359,010.45

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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.