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Finding the Fourth Proportional to 324,000.80, 485,938.56 and 99,306.80

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Solution

The fourth proportional to 324,000.80, 485,938.56 and 99,306.80 is: 148,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,000.80 : 485,938.56 = 99,306.80 : x
  2. Step 2: Convert to fraction form
    324,000.80/485,938.56 = 99,306.80/x
  3. Step 3: Cross multiply
    324,000.80x = 485,938.56 × 99,306.80
  4. Step 4: Simplify right side
    324,000.80x = 48,257,003,390.21
  5. Step 5: Solve for x
    x = 48,257,003,390.21/324,000.80
  6. Step 6: Final answer
    x = 148,941.00

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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.