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Finding the Fourth Proportional to 249,188.78, 343,848.37 and 140,279.37

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Solution

The fourth proportional to 249,188.78, 343,848.37 and 140,279.37 is: 193,567.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,188.78 : 343,848.37 = 140,279.37 : x
  2. Step 2: Convert to fraction form
    249,188.78/343,848.37 = 140,279.37/x
  3. Step 3: Cross multiply
    249,188.78x = 343,848.37 × 140,279.37
  4. Step 4: Simplify right side
    249,188.78x = 48,234,832,719.13
  5. Step 5: Solve for x
    x = 48,234,832,719.13/249,188.78
  6. Step 6: Final answer
    x = 193,567.43

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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.