Home / 248,305.86-342,638.34-139,385.22

Finding the Fourth Proportional to 248,305.86, 342,638.34 and 139,385.22

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Solution

The fourth proportional to 248,305.86, 342,638.34 and 139,385.22 is: 192,338.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,305.86 : 342,638.34 = 139,385.22 : x
  2. Step 2: Convert to fraction form
    248,305.86/342,638.34 = 139,385.22/x
  3. Step 3: Cross multiply
    248,305.86x = 342,638.34 × 139,385.22
  4. Step 4: Simplify right side
    248,305.86x = 47,758,720,401.33
  5. Step 5: Solve for x
    x = 47,758,720,401.33/248,305.86
  6. Step 6: Final answer
    x = 192,338.27

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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.