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Finding the Fourth Proportional to 397,549.72, 548,602.78 and 216,261.88

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Solution

The fourth proportional to 397,549.72, 548,602.78 and 216,261.88 is: 298,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,549.72 : 548,602.78 = 216,261.88 : x
  2. Step 2: Convert to fraction form
    397,549.72/548,602.78 = 216,261.88/x
  3. Step 3: Cross multiply
    397,549.72x = 548,602.78 × 216,261.88
  4. Step 4: Simplify right side
    397,549.72x = 118,641,868,576.03
  5. Step 5: Solve for x
    x = 118,641,868,576.03/397,549.72
  6. Step 6: Final answer
    x = 298,432.78

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1.5x scale

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.