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Finding the Fourth Proportional to 347,281.40, 520,922.10 and 291,294.20

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Solution

The fourth proportional to 347,281.40, 520,922.10 and 291,294.20 is: 436,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,281.40 : 520,922.10 = 291,294.20 : x
  2. Step 2: Convert to fraction form
    347,281.40/520,922.10 = 291,294.20/x
  3. Step 3: Cross multiply
    347,281.40x = 520,922.10 × 291,294.20
  4. Step 4: Simplify right side
    347,281.40x = 151,741,586,381.82
  5. Step 5: Solve for x
    x = 151,741,586,381.82/347,281.40
  6. Step 6: Final answer
    x = 436,941.30

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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.