Home / 319,246.20-478,869.30-129,706.20

Finding the Fourth Proportional to 319,246.20, 478,869.30 and 129,706.20

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Solution

The fourth proportional to 319,246.20, 478,869.30 and 129,706.20 is: 194,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,246.20 : 478,869.30 = 129,706.20 : x
  2. Step 2: Convert to fraction form
    319,246.20/478,869.30 = 129,706.20/x
  3. Step 3: Cross multiply
    319,246.20x = 478,869.30 × 129,706.20
  4. Step 4: Simplify right side
    319,246.20x = 62,112,317,199.66
  5. Step 5: Solve for x
    x = 62,112,317,199.66/319,246.20
  6. Step 6: Final answer
    x = 194,559.30

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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.