Home / 324,417.20-486,539.40-99,777.20

Finding the Fourth Proportional to 324,417.20, 486,539.40 and 99,777.20

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Solution

The fourth proportional to 324,417.20, 486,539.40 and 99,777.20 is: 149,639.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,417.20 : 486,539.40 = 99,777.20 : x
  2. Step 2: Convert to fraction form
    324,417.20/486,539.40 = 99,777.20/x
  3. Step 3: Cross multiply
    324,417.20x = 486,539.40 × 99,777.20
  4. Step 4: Simplify right side
    324,417.20x = 48,545,539,021.68
  5. Step 5: Solve for x
    x = 48,545,539,021.68/324,417.20
  6. Step 6: Final answer
    x = 149,639.23

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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.