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Finding the Fourth Proportional to 324,155.80, 486,233.70 and 87,522.40

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Solution

The fourth proportional to 324,155.80, 486,233.70 and 87,522.40 is: 131,283.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,155.80 : 486,233.70 = 87,522.40 : x
  2. Step 2: Convert to fraction form
    324,155.80/486,233.70 = 87,522.40/x
  3. Step 3: Cross multiply
    324,155.80x = 486,233.70 × 87,522.40
  4. Step 4: Simplify right side
    324,155.80x = 42,556,340,384.88
  5. Step 5: Solve for x
    x = 42,556,340,384.88/324,155.80
  6. Step 6: Final answer
    x = 131,283.60

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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.