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Finding the Fourth Proportional to 397,720.76, 548,854.73 and 218,872.76

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Solution

The fourth proportional to 397,720.76, 548,854.73 and 218,872.76 is: 302,044.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,720.76 : 548,854.73 = 218,872.76 : x
  2. Step 2: Convert to fraction form
    397,720.76/548,854.73 = 218,872.76/x
  3. Step 3: Cross multiply
    397,720.76x = 548,854.73 × 218,872.76
  4. Step 4: Simplify right side
    397,720.76x = 120,129,349,594.16
  5. Step 5: Solve for x
    x = 120,129,349,594.16/397,720.76
  6. Step 6: Final answer
    x = 302,044.45

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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.