Home / 397,407.35-548,144.15-261,397.82

Finding the Fourth Proportional to 397,407.35, 548,144.15 and 261,397.82

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Solution

The fourth proportional to 397,407.35, 548,144.15 and 261,397.82 is: 360,546.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,407.35 : 548,144.15 = 261,397.82 : x
  2. Step 2: Convert to fraction form
    397,407.35/548,144.15 = 261,397.82/x
  3. Step 3: Cross multiply
    397,407.35x = 548,144.15 × 261,397.82
  4. Step 4: Simplify right side
    397,407.35x = 143,283,683,768.53
  5. Step 5: Solve for x
    x = 143,283,683,768.53/397,407.35
  6. Step 6: Final answer
    x = 360,546.14

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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.