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Finding the Fourth Proportional to 485,467.16, 669,930.74 and 270,602.61

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Solution

The fourth proportional to 485,467.16, 669,930.74 and 270,602.61 is: 373,423.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,467.16 : 669,930.74 = 270,602.61 : x
  2. Step 2: Convert to fraction form
    485,467.16/669,930.74 = 270,602.61/x
  3. Step 3: Cross multiply
    485,467.16x = 669,930.74 × 270,602.61
  4. Step 4: Simplify right side
    485,467.16x = 181,285,006,763.23
  5. Step 5: Solve for x
    x = 181,285,006,763.23/485,467.16
  6. Step 6: Final answer
    x = 373,423.83

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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.