Home / 387,983.84-582,000.40-121,754.88

Finding the Fourth Proportional to 387,983.84, 582,000.40 and 121,754.88

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Solution

The fourth proportional to 387,983.84, 582,000.40 and 121,754.88 is: 182,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,983.84 : 582,000.40 = 121,754.88 : x
  2. Step 2: Convert to fraction form
    387,983.84/582,000.40 = 121,754.88/x
  3. Step 3: Cross multiply
    387,983.84x = 582,000.40 × 121,754.88
  4. Step 4: Simplify right side
    387,983.84x = 70,861,388,861.95
  5. Step 5: Solve for x
    x = 70,861,388,861.95/387,983.84
  6. Step 6: Final answer
    x = 182,640.05

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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.