Home / 398,748.72-550,261.20-217,464.19

Finding the Fourth Proportional to 398,748.72, 550,261.20 and 217,464.19

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Solution

The fourth proportional to 398,748.72, 550,261.20 and 217,464.19 is: 300,094.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,748.72 : 550,261.20 = 217,464.19 : x
  2. Step 2: Convert to fraction form
    398,748.72/550,261.20 = 217,464.19/x
  3. Step 3: Cross multiply
    398,748.72x = 550,261.20 × 217,464.19
  4. Step 4: Simplify right side
    398,748.72x = 119,662,107,458.25
  5. Step 5: Solve for x
    x = 119,662,107,458.25/398,748.72
  6. Step 6: Final answer
    x = 300,094.02

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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.