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Finding the Fourth Proportional to 207,731.52, 286,526.79 and 127,198.89

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Solution

The fourth proportional to 207,731.52, 286,526.79 and 127,198.89 is: 175,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,731.52 : 286,526.79 = 127,198.89 : x
  2. Step 2: Convert to fraction form
    207,731.52/286,526.79 = 127,198.89/x
  3. Step 3: Cross multiply
    207,731.52x = 286,526.79 × 127,198.89
  4. Step 4: Simplify right side
    207,731.52x = 36,445,889,643.26
  5. Step 5: Solve for x
    x = 36,445,889,643.26/207,731.52
  6. Step 6: Final answer
    x = 175,447.08

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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.