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Finding the Fourth Proportional to 485,397.57, 669,851.76 and 270,551.28

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Solution

The fourth proportional to 485,397.57, 669,851.76 and 270,551.28 is: 373,362.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,397.57 : 669,851.76 = 270,551.28 : x
  2. Step 2: Convert to fraction form
    485,397.57/669,851.76 = 270,551.28/x
  3. Step 3: Cross multiply
    485,397.57x = 669,851.76 × 270,551.28
  4. Step 4: Simplify right side
    485,397.57x = 181,229,247,728.99
  5. Step 5: Solve for x
    x = 181,229,247,728.99/485,397.57
  6. Step 6: Final answer
    x = 373,362.50

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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.