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Finding the Fourth Proportional to 249,155.92, 343,830.37 and 135,979.48

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Solution

The fourth proportional to 249,155.92, 343,830.37 and 135,979.48 is: 187,649.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,155.92 : 343,830.37 = 135,979.48 : x
  2. Step 2: Convert to fraction form
    249,155.92/343,830.37 = 135,979.48/x
  3. Step 3: Cross multiply
    249,155.92x = 343,830.37 × 135,979.48
  4. Step 4: Simplify right side
    249,155.92x = 46,753,872,521.76
  5. Step 5: Solve for x
    x = 46,753,872,521.76/249,155.92
  6. Step 6: Final answer
    x = 187,649.06

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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.