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Finding the Fourth Proportional to 202,312.80, 303,469.20 and 127,517.40

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Solution

The fourth proportional to 202,312.80, 303,469.20 and 127,517.40 is: 191,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,312.80 : 303,469.20 = 127,517.40 : x
  2. Step 2: Convert to fraction form
    202,312.80/303,469.20 = 127,517.40/x
  3. Step 3: Cross multiply
    202,312.80x = 303,469.20 × 127,517.40
  4. Step 4: Simplify right side
    202,312.80x = 38,697,603,364.08
  5. Step 5: Solve for x
    x = 38,697,603,364.08/202,312.80
  6. Step 6: Final answer
    x = 191,276.10

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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.