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Finding the Fourth Proportional to 314,853.70, 472,280.55 and 127,999.30

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Solution

The fourth proportional to 314,853.70, 472,280.55 and 127,999.30 is: 191,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,853.70 : 472,280.55 = 127,999.30 : x
  2. Step 2: Convert to fraction form
    314,853.70/472,280.55 = 127,999.30/x
  3. Step 3: Cross multiply
    314,853.70x = 472,280.55 × 127,999.30
  4. Step 4: Simplify right side
    314,853.70x = 60,451,579,803.62
  5. Step 5: Solve for x
    x = 60,451,579,803.62/314,853.70
  6. Step 6: Final answer
    x = 191,998.95

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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.