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Finding the Fourth Proportional to 291,810.11, 402,728.96 and 171,052.88

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Solution

The fourth proportional to 291,810.11, 402,728.96 and 171,052.88 is: 236,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,810.11 : 402,728.96 = 171,052.88 : x
  2. Step 2: Convert to fraction form
    291,810.11/402,728.96 = 171,052.88/x
  3. Step 3: Cross multiply
    291,810.11x = 402,728.96 × 171,052.88
  4. Step 4: Simplify right side
    291,810.11x = 68,887,947,612.14
  5. Step 5: Solve for x
    x = 68,887,947,612.14/291,810.11
  6. Step 6: Final answer
    x = 236,071.15

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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.