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Finding the Fourth Proportional to 397,548.72, 548,601.40 and 216,260.88

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Solution

The fourth proportional to 397,548.72, 548,601.40 and 216,260.88 is: 298,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,548.72 : 548,601.40 = 216,260.88 : x
  2. Step 2: Convert to fraction form
    397,548.72/548,601.40 = 216,260.88/x
  3. Step 3: Cross multiply
    397,548.72x = 548,601.40 × 216,260.88
  4. Step 4: Simplify right side
    397,548.72x = 118,641,021,533.23
  5. Step 5: Solve for x
    x = 118,641,021,533.23/397,548.72
  6. Step 6: Final answer
    x = 298,431.40

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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.