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Finding the Fourth Proportional to 249,216.88, 343,924 and 136,043.68

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Solution

The fourth proportional to 249,216.88, 343,924 and 136,043.68 is: 187,742.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,216.88 : 343,924 = 136,043.68 : x
  2. Step 2: Convert to fraction form
    249,216.88/343,924 = 136,043.68/x
  3. Step 3: Cross multiply
    249,216.88x = 343,924 × 136,043.68
  4. Step 4: Simplify right side
    249,216.88x = 46,788,686,600.32
  5. Step 5: Solve for x
    x = 46,788,686,600.32/249,216.88
  6. Step 6: Final answer
    x = 187,742.85

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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.