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Finding the Fourth Proportional to 661,416.80, 992,018.96 and 181,532.60

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Solution

The fourth proportional to 661,416.80, 992,018.96 and 181,532.60 is: 272,269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,416.80 : 992,018.96 = 181,532.60 : x
  2. Step 2: Convert to fraction form
    661,416.80/992,018.96 = 181,532.60/x
  3. Step 3: Cross multiply
    661,416.80x = 992,018.96 × 181,532.60
  4. Step 4: Simplify right side
    661,416.80x = 180,083,781,058.10
  5. Step 5: Solve for x
    x = 180,083,781,058.10/661,416.80
  6. Step 6: Final answer
    x = 272,269.74

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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.