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Finding the Fourth Proportional to 207,218.83, 285,686.72 and 135,475.51

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Solution

The fourth proportional to 207,218.83, 285,686.72 and 135,475.51 is: 186,776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,218.83 : 285,686.72 = 135,475.51 : x
  2. Step 2: Convert to fraction form
    207,218.83/285,686.72 = 135,475.51/x
  3. Step 3: Cross multiply
    207,218.83x = 285,686.72 × 135,475.51
  4. Step 4: Simplify right side
    207,218.83x = 38,703,553,414.85
  5. Step 5: Solve for x
    x = 38,703,553,414.85/207,218.83
  6. Step 6: Final answer
    x = 186,776.24

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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.