Home / 400,965.93-553,332.60-219,689.15

Finding the Fourth Proportional to 400,965.93, 553,332.60 and 219,689.15

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Solution

The fourth proportional to 400,965.93, 553,332.60 and 219,689.15 is: 303,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,965.93 : 553,332.60 = 219,689.15 : x
  2. Step 2: Convert to fraction form
    400,965.93/553,332.60 = 219,689.15/x
  3. Step 3: Cross multiply
    400,965.93x = 553,332.60 × 219,689.15
  4. Step 4: Simplify right side
    400,965.93x = 121,561,165,794.63
  5. Step 5: Solve for x
    x = 121,561,165,794.63/400,965.93
  6. Step 6: Final answer
    x = 303,170.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.