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Finding the Fourth Proportional to 249,903.78, 344,866.86 and 136,726.53

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Solution

The fourth proportional to 249,903.78, 344,866.86 and 136,726.53 is: 188,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,903.78 : 344,866.86 = 136,726.53 : x
  2. Step 2: Convert to fraction form
    249,903.78/344,866.86 = 136,726.53/x
  3. Step 3: Cross multiply
    249,903.78x = 344,866.86 × 136,726.53
  4. Step 4: Simplify right side
    249,903.78x = 47,152,449,079.80
  5. Step 5: Solve for x
    x = 47,152,449,079.80/249,903.78
  6. Step 6: Final answer
    x = 188,682.42

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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.