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Finding the Fourth Proportional to 356,373.36, 491,608.71 and 220,363.83

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Solution

The fourth proportional to 356,373.36, 491,608.71 and 220,363.83 is: 303,986.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,373.36 : 491,608.71 = 220,363.83 : x
  2. Step 2: Convert to fraction form
    356,373.36/491,608.71 = 220,363.83/x
  3. Step 3: Cross multiply
    356,373.36x = 491,608.71 × 220,363.83
  4. Step 4: Simplify right side
    356,373.36x = 108,332,778,196.96
  5. Step 5: Solve for x
    x = 108,332,778,196.96/356,373.36
  6. Step 6: Final answer
    x = 303,986.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.