Home / 309,378.24-426,934.80-180,308.52

Finding the Fourth Proportional to 309,378.24, 426,934.80 and 180,308.52

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Solution

The fourth proportional to 309,378.24, 426,934.80 and 180,308.52 is: 248,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,378.24 : 426,934.80 = 180,308.52 : x
  2. Step 2: Convert to fraction form
    309,378.24/426,934.80 = 180,308.52/x
  3. Step 3: Cross multiply
    309,378.24x = 426,934.80 × 180,308.52
  4. Step 4: Simplify right side
    309,378.24x = 76,979,981,924.50
  5. Step 5: Solve for x
    x = 76,979,981,924.50/309,378.24
  6. Step 6: Final answer
    x = 248,821.58

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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.