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Finding the Fourth Proportional to 202,938.70, 304,404.86 and 69,820.11

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Solution

The fourth proportional to 202,938.70, 304,404.86 and 69,820.11 is: 104,729.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,938.70 : 304,404.86 = 69,820.11 : x
  2. Step 2: Convert to fraction form
    202,938.70/304,404.86 = 69,820.11/x
  3. Step 3: Cross multiply
    202,938.70x = 304,404.86 × 69,820.11
  4. Step 4: Simplify right side
    202,938.70x = 21,253,580,460.63
  5. Step 5: Solve for x
    x = 21,253,580,460.63/202,938.70
  6. Step 6: Final answer
    x = 104,729.07

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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.