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Finding the Fourth Proportional to 221,498.40, 332,344.80 and 103,108.80

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Solution

The fourth proportional to 221,498.40, 332,344.80 and 103,108.80 is: 154,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,498.40 : 332,344.80 = 103,108.80 : x
  2. Step 2: Convert to fraction form
    221,498.40/332,344.80 = 103,108.80/x
  3. Step 3: Cross multiply
    221,498.40x = 332,344.80 × 103,108.80
  4. Step 4: Simplify right side
    221,498.40x = 34,267,673,514.24
  5. Step 5: Solve for x
    x = 34,267,673,514.24/221,498.40
  6. Step 6: Final answer
    x = 154,708.45

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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.