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Finding the Fourth Proportional to 324,339.58, 486,555.80 and 99,718.87

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Solution

The fourth proportional to 324,339.58, 486,555.80 and 99,718.87 is: 149,592.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,339.58 : 486,555.80 = 99,718.87 : x
  2. Step 2: Convert to fraction form
    324,339.58/486,555.80 = 99,718.87/x
  3. Step 3: Cross multiply
    324,339.58x = 486,555.80 × 99,718.87
  4. Step 4: Simplify right side
    324,339.58x = 48,518,795,285.74
  5. Step 5: Solve for x
    x = 48,518,795,285.74/324,339.58
  6. Step 6: Final answer
    x = 149,592.58

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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.