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Finding the Fourth Proportional to 664,729.80, 996,900.30 and 238,216.20

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Solution

The fourth proportional to 664,729.80, 996,900.30 and 238,216.20 is: 357,254.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,729.80 : 996,900.30 = 238,216.20 : x
  2. Step 2: Convert to fraction form
    664,729.80/996,900.30 = 238,216.20/x
  3. Step 3: Cross multiply
    664,729.80x = 996,900.30 × 238,216.20
  4. Step 4: Simplify right side
    664,729.80x = 237,477,801,244.86
  5. Step 5: Solve for x
    x = 237,477,801,244.86/664,729.80
  6. Step 6: Final answer
    x = 357,254.63

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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.