Home / 218,968.60-328,539.30-85,826.20

Finding the Fourth Proportional to 218,968.60, 328,539.30 and 85,826.20

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Solution

The fourth proportional to 218,968.60, 328,539.30 and 85,826.20 is: 128,773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,968.60 : 328,539.30 = 85,826.20 : x
  2. Step 2: Convert to fraction form
    218,968.60/328,539.30 = 85,826.20/x
  3. Step 3: Cross multiply
    218,968.60x = 328,539.30 × 85,826.20
  4. Step 4: Simplify right side
    218,968.60x = 28,197,279,669.66
  5. Step 5: Solve for x
    x = 28,197,279,669.66/218,968.60
  6. Step 6: Final answer
    x = 128,773.17

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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.