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Finding the Fourth Proportional to 218,805.60, 328,078.80 and 113,829.60

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Solution

The fourth proportional to 218,805.60, 328,078.80 and 113,829.60 is: 170,676.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,805.60 : 328,078.80 = 113,829.60 : x
  2. Step 2: Convert to fraction form
    218,805.60/328,078.80 = 113,829.60/x
  3. Step 3: Cross multiply
    218,805.60x = 328,078.80 × 113,829.60
  4. Step 4: Simplify right side
    218,805.60x = 37,345,078,572.48
  5. Step 5: Solve for x
    x = 37,345,078,572.48/218,805.60
  6. Step 6: Final answer
    x = 170,676.98

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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.