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Finding the Fourth Proportional to 347,189.92, 520,784.88 and 329,460.64

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Solution

The fourth proportional to 347,189.92, 520,784.88 and 329,460.64 is: 494,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,189.92 : 520,784.88 = 329,460.64 : x
  2. Step 2: Convert to fraction form
    347,189.92/520,784.88 = 329,460.64/x
  3. Step 3: Cross multiply
    347,189.92x = 520,784.88 × 329,460.64
  4. Step 4: Simplify right side
    347,189.92x = 171,578,119,867.12
  5. Step 5: Solve for x
    x = 171,578,119,867.12/347,189.92
  6. Step 6: Final answer
    x = 494,190.96

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Double scale
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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.