Home / 309,470.13-426,676.32-221,170.86

Finding the Fourth Proportional to 309,470.13, 426,676.32 and 221,170.86

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Solution

The fourth proportional to 309,470.13, 426,676.32 and 221,170.86 is: 304,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,470.13 : 426,676.32 = 221,170.86 : x
  2. Step 2: Convert to fraction form
    309,470.13/426,676.32 = 221,170.86/x
  3. Step 3: Cross multiply
    309,470.13x = 426,676.32 × 221,170.86
  4. Step 4: Simplify right side
    309,470.13x = 94,368,368,636.04
  5. Step 5: Solve for x
    x = 94,368,368,636.04/309,470.13
  6. Step 6: Final answer
    x = 304,935.31

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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.