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Finding the Fourth Proportional to 249,807.64, 344,734.56 and 136,630.40

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Solution

The fourth proportional to 249,807.64, 344,734.56 and 136,630.40 is: 188,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,807.64 : 344,734.56 = 136,630.40 : x
  2. Step 2: Convert to fraction form
    249,807.64/344,734.56 = 136,630.40/x
  3. Step 3: Cross multiply
    249,807.64x = 344,734.56 × 136,630.40
  4. Step 4: Simplify right side
    249,807.64x = 47,101,220,826.62
  5. Step 5: Solve for x
    x = 47,101,220,826.62/249,807.64
  6. Step 6: Final answer
    x = 188,549.96

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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.