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Finding the Fourth Proportional to 393,347.80, 590,006.34 and 112,864.96

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Solution

The fourth proportional to 393,347.80, 590,006.34 and 112,864.96 is: 169,293.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,347.80 : 590,006.34 = 112,864.96 : x
  2. Step 2: Convert to fraction form
    393,347.80/590,006.34 = 112,864.96/x
  3. Step 3: Cross multiply
    393,347.80x = 590,006.34 × 112,864.96
  4. Step 4: Simplify right side
    393,347.80x = 66,591,041,963.85
  5. Step 5: Solve for x
    x = 66,591,041,963.85/393,347.80
  6. Step 6: Final answer
    x = 169,293.03

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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.