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Finding the Fourth Proportional to 202,308.70, 303,712.65 and 127,428.70

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Solution

The fourth proportional to 202,308.70, 303,712.65 and 127,428.70 is: 191,300.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,308.70 : 303,712.65 = 127,428.70 : x
  2. Step 2: Convert to fraction form
    202,308.70/303,712.65 = 127,428.70/x
  3. Step 3: Cross multiply
    202,308.70x = 303,712.65 × 127,428.70
  4. Step 4: Simplify right side
    202,308.70x = 38,701,708,163.06
  5. Step 5: Solve for x
    x = 38,701,708,163.06/202,308.70
  6. Step 6: Final answer
    x = 191,300.27

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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.