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Finding the Fourth Proportional to 221,967.01, 306,344.46 and 125,190.74

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Solution

The fourth proportional to 221,967.01, 306,344.46 and 125,190.74 is: 172,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,967.01 : 306,344.46 = 125,190.74 : x
  2. Step 2: Convert to fraction form
    221,967.01/306,344.46 = 125,190.74/x
  3. Step 3: Cross multiply
    221,967.01x = 306,344.46 × 125,190.74
  4. Step 4: Simplify right side
    221,967.01x = 38,351,490,877.63
  5. Step 5: Solve for x
    x = 38,351,490,877.63/221,967.01
  6. Step 6: Final answer
    x = 172,780.14

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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.