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Finding the Fourth Proportional to 473,079.39, 709,612.40 and 220,218.45

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Solution

The fourth proportional to 473,079.39, 709,612.40 and 220,218.45 is: 330,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,079.39 : 709,612.40 = 220,218.45 : x
  2. Step 2: Convert to fraction form
    473,079.39/709,612.40 = 220,218.45/x
  3. Step 3: Cross multiply
    473,079.39x = 709,612.40 × 220,218.45
  4. Step 4: Simplify right side
    473,079.39x = 156,269,739,479.55
  5. Step 5: Solve for x
    x = 156,269,739,479.55/473,079.39
  6. Step 6: Final answer
    x = 330,324.56

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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.