Home / 343,629.60-515,444.40-320,301.60

Finding the Fourth Proportional to 343,629.60, 515,444.40 and 320,301.60

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Solution

The fourth proportional to 343,629.60, 515,444.40 and 320,301.60 is: 480,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,629.60 : 515,444.40 = 320,301.60 : x
  2. Step 2: Convert to fraction form
    343,629.60/515,444.40 = 320,301.60/x
  3. Step 3: Cross multiply
    343,629.60x = 515,444.40 × 320,301.60
  4. Step 4: Simplify right side
    343,629.60x = 165,097,666,031.04
  5. Step 5: Solve for x
    x = 165,097,666,031.04/343,629.60
  6. Step 6: Final answer
    x = 480,452.40

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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.