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Finding the Fourth Proportional to 314,770.40, 472,213.20 and 127,800.80

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Solution

The fourth proportional to 314,770.40, 472,213.20 and 127,800.80 is: 191,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,770.40 : 472,213.20 = 127,800.80 : x
  2. Step 2: Convert to fraction form
    314,770.40/472,213.20 = 127,800.80/x
  3. Step 3: Cross multiply
    314,770.40x = 472,213.20 × 127,800.80
  4. Step 4: Simplify right side
    314,770.40x = 60,349,224,730.56
  5. Step 5: Solve for x
    x = 60,349,224,730.56/314,770.40
  6. Step 6: Final answer
    x = 191,724.59

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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.