Home / 309,135.03-426,393.30-217,448.79

Finding the Fourth Proportional to 309,135.03, 426,393.30 and 217,448.79

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Solution

The fourth proportional to 309,135.03, 426,393.30 and 217,448.79 is: 299,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,135.03 : 426,393.30 = 217,448.79 : x
  2. Step 2: Convert to fraction form
    309,135.03/426,393.30 = 217,448.79/x
  3. Step 3: Cross multiply
    309,135.03x = 426,393.30 × 217,448.79
  4. Step 4: Simplify right side
    309,135.03x = 92,718,707,149.11
  5. Step 5: Solve for x
    x = 92,718,707,149.11/309,135.03
  6. Step 6: Final answer
    x = 299,929.47

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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.