Home / 245,943.92-339,399-138,514.16

Finding the Fourth Proportional to 245,943.92, 339,399 and 138,514.16

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Solution

The fourth proportional to 245,943.92, 339,399 and 138,514.16 is: 191,147.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,943.92 : 339,399 = 138,514.16 : x
  2. Step 2: Convert to fraction form
    245,943.92/339,399 = 138,514.16/x
  3. Step 3: Cross multiply
    245,943.92x = 339,399 × 138,514.16
  4. Step 4: Simplify right side
    245,943.92x = 47,011,567,389.84
  5. Step 5: Solve for x
    x = 47,011,567,389.84/245,943.92
  6. Step 6: Final answer
    x = 191,147.51

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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.