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Finding the Fourth Proportional to 324,007.60, 486,011.40 and 99,402.70

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Solution

The fourth proportional to 324,007.60, 486,011.40 and 99,402.70 is: 149,104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,007.60 : 486,011.40 = 99,402.70 : x
  2. Step 2: Convert to fraction form
    324,007.60/486,011.40 = 99,402.70/x
  3. Step 3: Cross multiply
    324,007.60x = 486,011.40 × 99,402.70
  4. Step 4: Simplify right side
    324,007.60x = 48,310,845,390.78
  5. Step 5: Solve for x
    x = 48,310,845,390.78/324,007.60
  6. Step 6: Final answer
    x = 149,104.05

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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.