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Finding the Fourth Proportional to 620,649.17, 930,956.51 and 165,244.31

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Solution

The fourth proportional to 620,649.17, 930,956.51 and 165,244.31 is: 247,861.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,649.17 : 930,956.51 = 165,244.31 : x
  2. Step 2: Convert to fraction form
    620,649.17/930,956.51 = 165,244.31/x
  3. Step 3: Cross multiply
    620,649.17x = 930,956.51 × 165,244.31
  4. Step 4: Simplify right side
    620,649.17x = 153,835,265,384.37
  5. Step 5: Solve for x
    x = 153,835,265,384.37/620,649.17
  6. Step 6: Final answer
    x = 247,861.87

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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.