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Finding the Fourth Proportional to 453,718.86, 680,526.44 and 121,320.78

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Solution

The fourth proportional to 453,718.86, 680,526.44 and 121,320.78 is: 181,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,718.86 : 680,526.44 = 121,320.78 : x
  2. Step 2: Convert to fraction form
    453,718.86/680,526.44 = 121,320.78/x
  3. Step 3: Cross multiply
    453,718.86x = 680,526.44 × 121,320.78
  4. Step 4: Simplify right side
    453,718.86x = 82,561,998,511.42
  5. Step 5: Solve for x
    x = 82,561,998,511.42/453,718.86
  6. Step 6: Final answer
    x = 181,967.31

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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.