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Finding the Fourth Proportional to 248,625.80, 372,938.70 and 71,143.40

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Solution

The fourth proportional to 248,625.80, 372,938.70 and 71,143.40 is: 106,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,625.80 : 372,938.70 = 71,143.40 : x
  2. Step 2: Convert to fraction form
    248,625.80/372,938.70 = 71,143.40/x
  3. Step 3: Cross multiply
    248,625.80x = 372,938.70 × 71,143.40
  4. Step 4: Simplify right side
    248,625.80x = 26,532,127,109.58
  5. Step 5: Solve for x
    x = 26,532,127,109.58/248,625.80
  6. Step 6: Final answer
    x = 106,715.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.