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Finding the Fourth Proportional to 620,636.63, 930,953.28 and 165,227.87

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Solution

The fourth proportional to 620,636.63, 930,953.28 and 165,227.87 is: 247,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,636.63 : 930,953.28 = 165,227.87 : x
  2. Step 2: Convert to fraction form
    620,636.63/930,953.28 = 165,227.87/x
  3. Step 3: Cross multiply
    620,636.63x = 930,953.28 × 165,227.87
  4. Step 4: Simplify right side
    620,636.63x = 153,819,422,869.15
  5. Step 5: Solve for x
    x = 153,819,422,869.15/620,636.63
  6. Step 6: Final answer
    x = 247,841.36

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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.