Home / 397,408.03-548,145.10-261,398.50

Finding the Fourth Proportional to 397,408.03, 548,145.10 and 261,398.50

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Solution

The fourth proportional to 397,408.03, 548,145.10 and 261,398.50 is: 360,547.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,408.03 : 548,145.10 = 261,398.50 : x
  2. Step 2: Convert to fraction form
    397,408.03/548,145.10 = 261,398.50/x
  3. Step 3: Cross multiply
    397,408.03x = 548,145.10 × 261,398.50
  4. Step 4: Simplify right side
    397,408.03x = 143,284,306,922.35
  5. Step 5: Solve for x
    x = 143,284,306,922.35/397,408.03
  6. Step 6: Final answer
    x = 360,547.09

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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.