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Finding the Fourth Proportional to 249,067.52, 343,713.12 and 135,890.72

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Solution

The fourth proportional to 249,067.52, 343,713.12 and 135,890.72 is: 187,529.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,067.52 : 343,713.12 = 135,890.72 : x
  2. Step 2: Convert to fraction form
    249,067.52/343,713.12 = 135,890.72/x
  3. Step 3: Cross multiply
    249,067.52x = 343,713.12 × 135,890.72
  4. Step 4: Simplify right side
    249,067.52x = 46,707,423,350.25
  5. Step 5: Solve for x
    x = 46,707,423,350.25/249,067.52
  6. Step 6: Final answer
    x = 187,529.16

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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.