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Finding the Fourth Proportional to 202,035.20, 303,139.20 and 127,212.80

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Solution

The fourth proportional to 202,035.20, 303,139.20 and 127,212.80 is: 190,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,035.20 : 303,139.20 = 127,212.80 : x
  2. Step 2: Convert to fraction form
    202,035.20/303,139.20 = 127,212.80/x
  3. Step 3: Cross multiply
    202,035.20x = 303,139.20 × 127,212.80
  4. Step 4: Simplify right side
    202,035.20x = 38,563,186,421.76
  5. Step 5: Solve for x
    x = 38,563,186,421.76/202,035.20
  6. Step 6: Final answer
    x = 190,873.60

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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.