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Finding the Fourth Proportional to 485,075.64, 669,360.96 and 270,211.10

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Solution

The fourth proportional to 485,075.64, 669,360.96 and 270,211.10 is: 372,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,075.64 : 669,360.96 = 270,211.10 : x
  2. Step 2: Convert to fraction form
    485,075.64/669,360.96 = 270,211.10/x
  3. Step 3: Cross multiply
    485,075.64x = 669,360.96 × 270,211.10
  4. Step 4: Simplify right side
    485,075.64x = 180,868,757,951.85
  5. Step 5: Solve for x
    x = 180,868,757,951.85/485,075.64
  6. Step 6: Final answer
    x = 372,867.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.