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Finding the Fourth Proportional to 249,816.48, 344,755.02 and 136,639.20

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Solution

The fourth proportional to 249,816.48, 344,755.02 and 136,639.20 is: 188,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,816.48 : 344,755.02 = 136,639.20 : x
  2. Step 2: Convert to fraction form
    249,816.48/344,755.02 = 136,639.20/x
  3. Step 3: Cross multiply
    249,816.48x = 344,755.02 × 136,639.20
  4. Step 4: Simplify right side
    249,816.48x = 47,107,050,128.78
  5. Step 5: Solve for x
    x = 47,107,050,128.78/249,816.48
  6. Step 6: Final answer
    x = 188,566.62

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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.