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Finding the Fourth Proportional to 218,856.60, 328,284.90 and 181,531.80

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Solution

The fourth proportional to 218,856.60, 328,284.90 and 181,531.80 is: 272,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,856.60 : 328,284.90 = 181,531.80 : x
  2. Step 2: Convert to fraction form
    218,856.60/328,284.90 = 181,531.80/x
  3. Step 3: Cross multiply
    218,856.60x = 328,284.90 × 181,531.80
  4. Step 4: Simplify right side
    218,856.60x = 59,594,148,809.82
  5. Step 5: Solve for x
    x = 59,594,148,809.82/218,856.60
  6. Step 6: Final answer
    x = 272,297.70

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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.