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Finding the Fourth Proportional to 398,809.08, 550,343.10 and 237,580.64

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Solution

The fourth proportional to 398,809.08, 550,343.10 and 237,580.64 is: 327,853.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,809.08 : 550,343.10 = 237,580.64 : x
  2. Step 2: Convert to fraction form
    398,809.08/550,343.10 = 237,580.64/x
  3. Step 3: Cross multiply
    398,809.08x = 550,343.10 × 237,580.64
  4. Step 4: Simplify right side
    398,809.08x = 130,750,865,917.58
  5. Step 5: Solve for x
    x = 130,750,865,917.58/398,809.08
  6. Step 6: Final answer
    x = 327,853.28

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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.