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Finding the Fourth Proportional to 442,641.72, 610,804.56 and 251,617.80

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Solution

The fourth proportional to 442,641.72, 610,804.56 and 251,617.80 is: 347,209.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,641.72 : 610,804.56 = 251,617.80 : x
  2. Step 2: Convert to fraction form
    442,641.72/610,804.56 = 251,617.80/x
  3. Step 3: Cross multiply
    442,641.72x = 610,804.56 × 251,617.80
  4. Step 4: Simplify right side
    442,641.72x = 153,689,299,617.17
  5. Step 5: Solve for x
    x = 153,689,299,617.17/442,641.72
  6. Step 6: Final answer
    x = 347,209.25

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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.