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Finding the Fourth Proportional to 248,000.70, 372,001.05 and 129,708.30

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Solution

The fourth proportional to 248,000.70, 372,001.05 and 129,708.30 is: 194,562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,000.70 : 372,001.05 = 129,708.30 : x
  2. Step 2: Convert to fraction form
    248,000.70/372,001.05 = 129,708.30/x
  3. Step 3: Cross multiply
    248,000.70x = 372,001.05 × 129,708.30
  4. Step 4: Simplify right side
    248,000.70x = 48,251,623,793.72
  5. Step 5: Solve for x
    x = 48,251,623,793.72/248,000.70
  6. Step 6: Final answer
    x = 194,562.45

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1.5x scale

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.