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Finding the Fourth Proportional to 291,978.88, 402,861.84 and 177,254.56

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Solution

The fourth proportional to 291,978.88, 402,861.84 and 177,254.56 is: 244,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,978.88 : 402,861.84 = 177,254.56 : x
  2. Step 2: Convert to fraction form
    291,978.88/402,861.84 = 177,254.56/x
  3. Step 3: Cross multiply
    291,978.88x = 402,861.84 × 177,254.56
  4. Step 4: Simplify right side
    291,978.88x = 71,409,098,189.99
  5. Step 5: Solve for x
    x = 71,409,098,189.99/291,978.88
  6. Step 6: Final answer
    x = 244,569.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.