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Finding the Fourth Proportional to 485,256.54, 669,674.64 and 270,396.78

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Solution

The fourth proportional to 485,256.54, 669,674.64 and 270,396.78 is: 373,159.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,256.54 : 669,674.64 = 270,396.78 : x
  2. Step 2: Convert to fraction form
    485,256.54/669,674.64 = 270,396.78/x
  3. Step 3: Cross multiply
    485,256.54x = 669,674.64 × 270,396.78
  4. Step 4: Simplify right side
    485,256.54x = 181,077,866,303.66
  5. Step 5: Solve for x
    x = 181,077,866,303.66/485,256.54
  6. Step 6: Final answer
    x = 373,159.04

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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.