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Finding the Fourth Proportional to 321,958.60, 482,937.90 and 144,471.40

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Solution

The fourth proportional to 321,958.60, 482,937.90 and 144,471.40 is: 216,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,958.60 : 482,937.90 = 144,471.40 : x
  2. Step 2: Convert to fraction form
    321,958.60/482,937.90 = 144,471.40/x
  3. Step 3: Cross multiply
    321,958.60x = 482,937.90 × 144,471.40
  4. Step 4: Simplify right side
    321,958.60x = 69,770,714,526.06
  5. Step 5: Solve for x
    x = 69,770,714,526.06/321,958.60
  6. Step 6: Final answer
    x = 216,707.10

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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.