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Finding the Fourth Proportional to 485,292.85, 669,708.99 and 267,509.25

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Solution

The fourth proportional to 485,292.85, 669,708.99 and 267,509.25 is: 369,165.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,292.85 : 669,708.99 = 267,509.25 : x
  2. Step 2: Convert to fraction form
    485,292.85/669,708.99 = 267,509.25/x
  3. Step 3: Cross multiply
    485,292.85x = 669,708.99 × 267,509.25
  4. Step 4: Simplify right side
    485,292.85x = 179,153,349,633.16
  5. Step 5: Solve for x
    x = 179,153,349,633.16/485,292.85
  6. Step 6: Final answer
    x = 369,165.44

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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.