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Finding the Fourth Proportional to 453,878.46, 680,918.79 and 138,359.94

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Solution

The fourth proportional to 453,878.46, 680,918.79 and 138,359.94 is: 207,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,878.46 : 680,918.79 = 138,359.94 : x
  2. Step 2: Convert to fraction form
    453,878.46/680,918.79 = 138,359.94/x
  3. Step 3: Cross multiply
    453,878.46x = 680,918.79 × 138,359.94
  4. Step 4: Simplify right side
    453,878.46x = 94,211,882,929.27
  5. Step 5: Solve for x
    x = 94,211,882,929.27/453,878.46
  6. Step 6: Final answer
    x = 207,570.73

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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.