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Finding the Fourth Proportional to 347,310.30, 520,965.45 and 291,323.10

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Solution

The fourth proportional to 347,310.30, 520,965.45 and 291,323.10 is: 436,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,310.30 : 520,965.45 = 291,323.10 : x
  2. Step 2: Convert to fraction form
    347,310.30/520,965.45 = 291,323.10/x
  3. Step 3: Cross multiply
    347,310.30x = 520,965.45 × 291,323.10
  4. Step 4: Simplify right side
    347,310.30x = 151,769,269,886.90
  5. Step 5: Solve for x
    x = 151,769,269,886.90/347,310.30
  6. Step 6: Final answer
    x = 436,984.65

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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.