Home / 443,789.40-665,246.70-218,965.80

Finding the Fourth Proportional to 443,789.40, 665,246.70 and 218,965.80

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Solution

The fourth proportional to 443,789.40, 665,246.70 and 218,965.80 is: 328,232.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,789.40 : 665,246.70 = 218,965.80 : x
  2. Step 2: Convert to fraction form
    443,789.40/665,246.70 = 218,965.80/x
  3. Step 3: Cross multiply
    443,789.40x = 665,246.70 × 218,965.80
  4. Step 4: Simplify right side
    443,789.40x = 145,666,275,862.86
  5. Step 5: Solve for x
    x = 145,666,275,862.86/443,789.40
  6. Step 6: Final answer
    x = 328,232.89

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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.