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Finding the Fourth Proportional to 324,339.45, 486,555.61 and 99,718.75

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Solution

The fourth proportional to 324,339.45, 486,555.61 and 99,718.75 is: 149,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,339.45 : 486,555.61 = 99,718.75 : x
  2. Step 2: Convert to fraction form
    324,339.45/486,555.61 = 99,718.75/x
  3. Step 3: Cross multiply
    324,339.45x = 486,555.61 × 99,718.75
  4. Step 4: Simplify right side
    324,339.45x = 48,518,716,018.30
  5. Step 5: Solve for x
    x = 48,518,716,018.30/324,339.45
  6. Step 6: Final answer
    x = 149,592.40

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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.