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Finding the Fourth Proportional to 486,702.45, 671,645.43 and 268,910.45

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Solution

The fourth proportional to 486,702.45, 671,645.43 and 268,910.45 is: 371,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,702.45 : 671,645.43 = 268,910.45 : x
  2. Step 2: Convert to fraction form
    486,702.45/671,645.43 = 268,910.45/x
  3. Step 3: Cross multiply
    486,702.45x = 671,645.43 × 268,910.45
  4. Step 4: Simplify right side
    486,702.45x = 180,612,471,463.52
  5. Step 5: Solve for x
    x = 180,612,471,463.52/486,702.45
  6. Step 6: Final answer
    x = 371,094.23

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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.