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Finding the Fourth Proportional to 202,100.70, 303,400.65 and 127,220.70

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Solution

The fourth proportional to 202,100.70, 303,400.65 and 127,220.70 is: 190,988.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,100.70 : 303,400.65 = 127,220.70 : x
  2. Step 2: Convert to fraction form
    202,100.70/303,400.65 = 127,220.70/x
  3. Step 3: Cross multiply
    202,100.70x = 303,400.65 × 127,220.70
  4. Step 4: Simplify right side
    202,100.70x = 38,598,843,073.46
  5. Step 5: Solve for x
    x = 38,598,843,073.46/202,100.70
  6. Step 6: Final answer
    x = 190,988.17

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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.