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Finding the Fourth Proportional to 321,607.89, 482,449.28 and 122,077.53

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Solution

The fourth proportional to 321,607.89, 482,449.28 and 122,077.53 is: 183,130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,607.89 : 482,449.28 = 122,077.53 : x
  2. Step 2: Convert to fraction form
    321,607.89/482,449.28 = 122,077.53/x
  3. Step 3: Cross multiply
    321,607.89x = 482,449.28 × 122,077.53
  4. Step 4: Simplify right side
    321,607.89x = 58,896,215,842.29
  5. Step 5: Solve for x
    x = 58,896,215,842.29/321,607.89
  6. Step 6: Final answer
    x = 183,130.51

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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.