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Finding the Fourth Proportional to 204,184.80, 306,050.40 and 85,821.12

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Solution

The fourth proportional to 204,184.80, 306,050.40 and 85,821.12 is: 128,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,184.80 : 306,050.40 = 85,821.12 : x
  2. Step 2: Convert to fraction form
    204,184.80/306,050.40 = 85,821.12/x
  3. Step 3: Cross multiply
    204,184.80x = 306,050.40 × 85,821.12
  4. Step 4: Simplify right side
    204,184.80x = 26,265,588,104.45
  5. Step 5: Solve for x
    x = 26,265,588,104.45/204,184.80
  6. Step 6: Final answer
    x = 128,636.35

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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.