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Finding the Fourth Proportional to 218,109.60, 326,775.60 and 187,005.60

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Solution

The fourth proportional to 218,109.60, 326,775.60 and 187,005.60 is: 280,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,109.60 : 326,775.60 = 187,005.60 : x
  2. Step 2: Convert to fraction form
    218,109.60/326,775.60 = 187,005.60/x
  3. Step 3: Cross multiply
    218,109.60x = 326,775.60 × 187,005.60
  4. Step 4: Simplify right side
    218,109.60x = 61,108,867,143.36
  5. Step 5: Solve for x
    x = 61,108,867,143.36/218,109.60
  6. Step 6: Final answer
    x = 280,175.05

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1.5x scale

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.