Home / 485,081.25-669,432.77-270,221.05

Finding the Fourth Proportional to 485,081.25, 669,432.77 and 270,221.05

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Solution

The fourth proportional to 485,081.25, 669,432.77 and 270,221.05 is: 372,916.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,081.25 : 669,432.77 = 270,221.05 : x
  2. Step 2: Convert to fraction form
    485,081.25/669,432.77 = 270,221.05/x
  3. Step 3: Cross multiply
    485,081.25x = 669,432.77 × 270,221.05
  4. Step 4: Simplify right side
    485,081.25x = 180,894,826,013.81
  5. Step 5: Solve for x
    x = 180,894,826,013.81/485,081.25
  6. Step 6: Final answer
    x = 372,916.55

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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.