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Finding the Fourth Proportional to 324,403.20, 486,518.40 and 99,763.20

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Solution

The fourth proportional to 324,403.20, 486,518.40 and 99,763.20 is: 149,618.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,403.20 : 486,518.40 = 99,763.20 : x
  2. Step 2: Convert to fraction form
    324,403.20/486,518.40 = 99,763.20/x
  3. Step 3: Cross multiply
    324,403.20x = 486,518.40 × 99,763.20
  4. Step 4: Simplify right side
    324,403.20x = 48,536,632,442.88
  5. Step 5: Solve for x
    x = 48,536,632,442.88/324,403.20
  6. Step 6: Final answer
    x = 149,618.23

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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.