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Finding the Fourth Proportional to 485,223.06, 726,751.29 and 372,069.90

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Solution

The fourth proportional to 485,223.06, 726,751.29 and 372,069.90 is: 557,274.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,223.06 : 726,751.29 = 372,069.90 : x
  2. Step 2: Convert to fraction form
    485,223.06/726,751.29 = 372,069.90/x
  3. Step 3: Cross multiply
    485,223.06x = 726,751.29 × 372,069.90
  4. Step 4: Simplify right side
    485,223.06x = 270,402,279,795.17
  5. Step 5: Solve for x
    x = 270,402,279,795.17/485,223.06
  6. Step 6: Final answer
    x = 557,274.17

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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.