Home / 307,977.60-461,966.40-213,499.20

Finding the Fourth Proportional to 307,977.60, 461,966.40 and 213,499.20

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Solution

The fourth proportional to 307,977.60, 461,966.40 and 213,499.20 is: 320,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,977.60 : 461,966.40 = 213,499.20 : x
  2. Step 2: Convert to fraction form
    307,977.60/461,966.40 = 213,499.20/x
  3. Step 3: Cross multiply
    307,977.60x = 461,966.40 × 213,499.20
  4. Step 4: Simplify right side
    307,977.60x = 98,629,456,826.88
  5. Step 5: Solve for x
    x = 98,629,456,826.88/307,977.60
  6. Step 6: Final answer
    x = 320,248.80

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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.