Home / 397,408.10-548,145.19-261,398.57

Finding the Fourth Proportional to 397,408.10, 548,145.19 and 261,398.57

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Solution

The fourth proportional to 397,408.10, 548,145.19 and 261,398.57 is: 360,547.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,408.10 : 548,145.19 = 261,398.57 : x
  2. Step 2: Convert to fraction form
    397,408.10/548,145.19 = 261,398.57/x
  3. Step 3: Cross multiply
    397,408.10x = 548,145.19 × 261,398.57
  4. Step 4: Simplify right side
    397,408.10x = 143,284,365,424.16
  5. Step 5: Solve for x
    x = 143,284,365,424.16/397,408.10
  6. Step 6: Final answer
    x = 360,547.17

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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.