Home / 397,407.03-548,143.72-261,397.50

Finding the Fourth Proportional to 397,407.03, 548,143.72 and 261,397.50

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Solution

The fourth proportional to 397,407.03, 548,143.72 and 261,397.50 is: 360,545.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,407.03 : 548,143.72 = 261,397.50 : x
  2. Step 2: Convert to fraction form
    397,407.03/548,143.72 = 261,397.50/x
  3. Step 3: Cross multiply
    397,407.03x = 548,143.72 × 261,397.50
  4. Step 4: Simplify right side
    397,407.03x = 143,283,399,419.06
  5. Step 5: Solve for x
    x = 143,283,399,419.06/397,407.03
  6. Step 6: Final answer
    x = 360,545.71

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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.