Home / 347,278.90-520,918.35-291,291.70

Finding the Fourth Proportional to 347,278.90, 520,918.35 and 291,291.70

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Solution

The fourth proportional to 347,278.90, 520,918.35 and 291,291.70 is: 436,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,278.90 : 520,918.35 = 291,291.70 : x
  2. Step 2: Convert to fraction form
    347,278.90/520,918.35 = 291,291.70/x
  3. Step 3: Cross multiply
    347,278.90x = 520,918.35 × 291,291.70
  4. Step 4: Simplify right side
    347,278.90x = 151,739,191,732.70
  5. Step 5: Solve for x
    x = 151,739,191,732.70/347,278.90
  6. Step 6: Final answer
    x = 436,937.55

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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.