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Finding the Fourth Proportional to 145,818, 218,727 and 47,322

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Solution

The fourth proportional to 145,818, 218,727 and 47,322 is: 70,983

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,818 : 218,727 = 47,322 : x
  2. Step 2: Convert to fraction form
    145,818/218,727 = 47,322/x
  3. Step 3: Cross multiply
    145,818x = 218,727 × 47,322
  4. Step 4: Simplify right side
    145,818x = 10,350,599,094
  5. Step 5: Solve for x
    x = 10,350,599,094/145,818
  6. Step 6: Final answer
    x = 70,983

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