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Finding the Fourth Proportional to 486,678.48, 671,655.41 and 268,906.13

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Solution

The fourth proportional to 486,678.48, 671,655.41 and 268,906.13 is: 371,112.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,678.48 : 671,655.41 = 268,906.13 : x
  2. Step 2: Convert to fraction form
    486,678.48/671,655.41 = 268,906.13/x
  3. Step 3: Cross multiply
    486,678.48x = 671,655.41 × 268,906.13
  4. Step 4: Simplify right side
    486,678.48x = 180,612,252,293.86
  5. Step 5: Solve for x
    x = 180,612,252,293.86/486,678.48
  6. Step 6: Final answer
    x = 371,112.06

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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.