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Finding the Fourth Proportional to 347,331.20, 520,867.20 and 136,925.60

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Solution

The fourth proportional to 347,331.20, 520,867.20 and 136,925.60 is: 205,337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,331.20 : 520,867.20 = 136,925.60 : x
  2. Step 2: Convert to fraction form
    347,331.20/520,867.20 = 136,925.60/x
  3. Step 3: Cross multiply
    347,331.20x = 520,867.20 × 136,925.60
  4. Step 4: Simplify right side
    347,331.20x = 71,320,053,880.32
  5. Step 5: Solve for x
    x = 71,320,053,880.32/347,331.20
  6. Step 6: Final answer
    x = 205,337.31

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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.