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Finding the Fourth Proportional to 442,642.72, 610,805.94 and 251,618.80

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Solution

The fourth proportional to 442,642.72, 610,805.94 and 251,618.80 is: 347,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,642.72 : 610,805.94 = 251,618.80 : x
  2. Step 2: Convert to fraction form
    442,642.72/610,805.94 = 251,618.80/x
  3. Step 3: Cross multiply
    442,642.72x = 610,805.94 × 251,618.80
  4. Step 4: Simplify right side
    442,642.72x = 153,690,257,655.67
  5. Step 5: Solve for x
    x = 153,690,257,655.67/442,642.72
  6. Step 6: Final answer
    x = 347,210.63

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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.