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Finding the Fourth Proportional to 202,712.70, 304,155.45 and 127,890.30

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Solution

The fourth proportional to 202,712.70, 304,155.45 and 127,890.30 is: 191,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,712.70 : 304,155.45 = 127,890.30 : x
  2. Step 2: Convert to fraction form
    202,712.70/304,155.45 = 127,890.30/x
  3. Step 3: Cross multiply
    202,712.70x = 304,155.45 × 127,890.30
  4. Step 4: Simplify right side
    202,712.70x = 38,898,531,747.14
  5. Step 5: Solve for x
    x = 38,898,531,747.14/202,712.70
  6. Step 6: Final answer
    x = 191,889.96

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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.