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Finding the Fourth Proportional to 291,659.20, 437,475.84 and 81,292.48

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Solution

The fourth proportional to 291,659.20, 437,475.84 and 81,292.48 is: 121,935.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,659.20 : 437,475.84 = 81,292.48 : x
  2. Step 2: Convert to fraction form
    291,659.20/437,475.84 = 81,292.48/x
  3. Step 3: Cross multiply
    291,659.20x = 437,475.84 × 81,292.48
  4. Step 4: Simplify right side
    291,659.20x = 35,563,495,973.68
  5. Step 5: Solve for x
    x = 35,563,495,973.68/291,659.20
  6. Step 6: Final answer
    x = 121,935.11

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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.