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Finding the Fourth Proportional to 393,812.70, 591,010.65 and 260,648.70

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Solution

The fourth proportional to 393,812.70, 591,010.65 and 260,648.70 is: 391,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,812.70 : 591,010.65 = 260,648.70 : x
  2. Step 2: Convert to fraction form
    393,812.70/591,010.65 = 260,648.70/x
  3. Step 3: Cross multiply
    393,812.70x = 591,010.65 × 260,648.70
  4. Step 4: Simplify right side
    393,812.70x = 154,046,157,608.66
  5. Step 5: Solve for x
    x = 154,046,157,608.66/393,812.70
  6. Step 6: Final answer
    x = 391,166.05

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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.