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Finding the Fourth Proportional to 486,685.50, 730,112.34 and 216,909.52

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Solution

The fourth proportional to 486,685.50, 730,112.34 and 216,909.52 is: 325,401.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,685.50 : 730,112.34 = 216,909.52 : x
  2. Step 2: Convert to fraction form
    486,685.50/730,112.34 = 216,909.52/x
  3. Step 3: Cross multiply
    486,685.50x = 730,112.34 × 216,909.52
  4. Step 4: Simplify right side
    486,685.50x = 158,368,317,215.48
  5. Step 5: Solve for x
    x = 158,368,317,215.48/486,685.50
  6. Step 6: Final answer
    x = 325,401.76

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1.5x scale

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.