Home / 439,206.20-657,351.30-318,921.20

Finding the Fourth Proportional to 439,206.20, 657,351.30 and 318,921.20

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Solution

The fourth proportional to 439,206.20, 657,351.30 and 318,921.20 is: 477,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,206.20 : 657,351.30 = 318,921.20 : x
  2. Step 2: Convert to fraction form
    439,206.20/657,351.30 = 318,921.20/x
  3. Step 3: Cross multiply
    439,206.20x = 657,351.30 × 318,921.20
  4. Step 4: Simplify right side
    439,206.20x = 209,643,265,417.56
  5. Step 5: Solve for x
    x = 209,643,265,417.56/439,206.20
  6. Step 6: Final answer
    x = 477,323.10

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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.