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Finding the Fourth Proportional to 321,670.13, 482,365.01 and 108,398.30

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Solution

The fourth proportional to 321,670.13, 482,365.01 and 108,398.30 is: 162,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,670.13 : 482,365.01 = 108,398.30 : x
  2. Step 2: Convert to fraction form
    321,670.13/482,365.01 = 108,398.30/x
  3. Step 3: Cross multiply
    321,670.13x = 482,365.01 × 108,398.30
  4. Step 4: Simplify right side
    321,670.13x = 52,287,547,063.48
  5. Step 5: Solve for x
    x = 52,287,547,063.48/321,670.13
  6. Step 6: Final answer
    x = 162,550.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.