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Finding the Fourth Proportional to 397,161.72, 548,083.88 and 215,873.16

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Solution

The fourth proportional to 397,161.72, 548,083.88 and 215,873.16 is: 297,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,161.72 : 548,083.88 = 215,873.16 : x
  2. Step 2: Convert to fraction form
    397,161.72/548,083.88 = 215,873.16/x
  3. Step 3: Cross multiply
    397,161.72x = 548,083.88 × 215,873.16
  4. Step 4: Simplify right side
    397,161.72x = 118,316,598,041.30
  5. Step 5: Solve for x
    x = 118,316,598,041.30/397,161.72
  6. Step 6: Final answer
    x = 297,905.34

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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.