Home / 258,418.11-387,557.10-163,505.72

Finding the Fourth Proportional to 258,418.11, 387,557.10 and 163,505.72

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Solution

The fourth proportional to 258,418.11, 387,557.10 and 163,505.72 is: 245,214.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,418.11 : 387,557.10 = 163,505.72 : x
  2. Step 2: Convert to fraction form
    258,418.11/387,557.10 = 163,505.72/x
  3. Step 3: Cross multiply
    258,418.11x = 387,557.10 × 163,505.72
  4. Step 4: Simplify right side
    258,418.11x = 63,367,800,738.83
  5. Step 5: Solve for x
    x = 63,367,800,738.83/258,418.11
  6. Step 6: Final answer
    x = 245,214.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.