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Finding the Fourth Proportional to 485,073.26, 669,421.28 and 270,213.27

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Solution

The fourth proportional to 485,073.26, 669,421.28 and 270,213.27 is: 372,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,073.26 : 669,421.28 = 270,213.27 : x
  2. Step 2: Convert to fraction form
    485,073.26/669,421.28 = 270,213.27/x
  3. Step 3: Cross multiply
    485,073.26x = 669,421.28 × 270,213.27
  4. Step 4: Simplify right side
    485,073.26x = 180,886,513,751.92
  5. Step 5: Solve for x
    x = 180,886,513,751.92/485,073.26
  6. Step 6: Final answer
    x = 372,905.55

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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.