Home / 517,851.12-777,078.60-218,313.36

Finding the Fourth Proportional to 517,851.12, 777,078.60 and 218,313.36

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Solution

The fourth proportional to 517,851.12, 777,078.60 and 218,313.36 is: 327,597.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,851.12 : 777,078.60 = 218,313.36 : x
  2. Step 2: Convert to fraction form
    517,851.12/777,078.60 = 218,313.36/x
  3. Step 3: Cross multiply
    517,851.12x = 777,078.60 × 218,313.36
  4. Step 4: Simplify right side
    517,851.12x = 169,646,640,150.10
  5. Step 5: Solve for x
    x = 169,646,640,150.10/517,851.12
  6. Step 6: Final answer
    x = 327,597.32

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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.