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Finding the Fourth Proportional to 453,780.45, 680,670.68 and 121,356.45

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Solution

The fourth proportional to 453,780.45, 680,670.68 and 121,356.45 is: 182,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,780.45 : 680,670.68 = 121,356.45 : x
  2. Step 2: Convert to fraction form
    453,780.45/680,670.68 = 121,356.45/x
  3. Step 3: Cross multiply
    453,780.45x = 680,670.68 × 121,356.45
  4. Step 4: Simplify right side
    453,780.45x = 82,603,776,737.10
  5. Step 5: Solve for x
    x = 82,603,776,737.10/453,780.45
  6. Step 6: Final answer
    x = 182,034.68

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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.