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Finding the Fourth Proportional to 249,004.92, 343,655.46 and 138,634.68

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Solution

The fourth proportional to 249,004.92, 343,655.46 and 138,634.68 is: 191,331.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,004.92 : 343,655.46 = 138,634.68 : x
  2. Step 2: Convert to fraction form
    249,004.92/343,655.46 = 138,634.68/x
  3. Step 3: Cross multiply
    249,004.92x = 343,655.46 × 138,634.68
  4. Step 4: Simplify right side
    249,004.92x = 47,642,564,727.35
  5. Step 5: Solve for x
    x = 47,642,564,727.35/249,004.92
  6. Step 6: Final answer
    x = 191,331.82

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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.