Home / 347,279.90-520,919.85-291,292.70

Finding the Fourth Proportional to 347,279.90, 520,919.85 and 291,292.70

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Solution

The fourth proportional to 347,279.90, 520,919.85 and 291,292.70 is: 436,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,279.90 : 520,919.85 = 291,292.70 : x
  2. Step 2: Convert to fraction form
    347,279.90/520,919.85 = 291,292.70/x
  3. Step 3: Cross multiply
    347,279.90x = 520,919.85 × 291,292.70
  4. Step 4: Simplify right side
    347,279.90x = 151,740,149,590.10
  5. Step 5: Solve for x
    x = 151,740,149,590.10/347,279.90
  6. Step 6: Final answer
    x = 436,939.05

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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.