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Finding the Fourth Proportional to 249,685.28, 344,565.66 and 136,508

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Solution

The fourth proportional to 249,685.28, 344,565.66 and 136,508 is: 188,381.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,685.28 : 344,565.66 = 136,508 : x
  2. Step 2: Convert to fraction form
    249,685.28/344,565.66 = 136,508/x
  3. Step 3: Cross multiply
    249,685.28x = 344,565.66 × 136,508
  4. Step 4: Simplify right side
    249,685.28x = 47,035,969,115.28
  5. Step 5: Solve for x
    x = 47,035,969,115.28/249,685.28
  6. Step 6: Final answer
    x = 188,381.03

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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.