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Finding the Fourth Proportional to 486,697.88, 671,656.61 and 268,920.58

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Solution

The fourth proportional to 486,697.88, 671,656.61 and 268,920.58 is: 371,117.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,697.88 : 671,656.61 = 268,920.58 : x
  2. Step 2: Convert to fraction form
    486,697.88/671,656.61 = 268,920.58/x
  3. Step 3: Cross multiply
    486,697.88x = 671,656.61 × 268,920.58
  4. Step 4: Simplify right side
    486,697.88x = 180,622,287,452.67
  5. Step 5: Solve for x
    x = 180,622,287,452.67/486,697.88
  6. Step 6: Final answer
    x = 371,117.88

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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.