Home / 307,965.60-461,948.40-213,487.20

Finding the Fourth Proportional to 307,965.60, 461,948.40 and 213,487.20

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Solution

The fourth proportional to 307,965.60, 461,948.40 and 213,487.20 is: 320,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,965.60 : 461,948.40 = 213,487.20 : x
  2. Step 2: Convert to fraction form
    307,965.60/461,948.40 = 213,487.20/x
  3. Step 3: Cross multiply
    307,965.60x = 461,948.40 × 213,487.20
  4. Step 4: Simplify right side
    307,965.60x = 98,620,070,460.48
  5. Step 5: Solve for x
    x = 98,620,070,460.48/307,965.60
  6. Step 6: Final answer
    x = 320,230.80

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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.