Home / 274,785.12-378,556.08-258,251.40

Finding the Fourth Proportional to 274,785.12, 378,556.08 and 258,251.40

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Solution

The fourth proportional to 274,785.12, 378,556.08 and 258,251.40 is: 355,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,785.12 : 378,556.08 = 258,251.40 : x
  2. Step 2: Convert to fraction form
    274,785.12/378,556.08 = 258,251.40/x
  3. Step 3: Cross multiply
    274,785.12x = 378,556.08 × 258,251.40
  4. Step 4: Simplify right side
    274,785.12x = 97,762,637,638.51
  5. Step 5: Solve for x
    x = 97,762,637,638.51/274,785.12
  6. Step 6: Final answer
    x = 355,778.50

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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.