Home / 287,856.20-431,784.30-227,721.80

Finding the Fourth Proportional to 287,856.20, 431,784.30 and 227,721.80

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Solution

The fourth proportional to 287,856.20, 431,784.30 and 227,721.80 is: 341,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,856.20 : 431,784.30 = 227,721.80 : x
  2. Step 2: Convert to fraction form
    287,856.20/431,784.30 = 227,721.80/x
  3. Step 3: Cross multiply
    287,856.20x = 431,784.30 × 227,721.80
  4. Step 4: Simplify right side
    287,856.20x = 98,326,698,007.74
  5. Step 5: Solve for x
    x = 98,326,698,007.74/287,856.20
  6. Step 6: Final answer
    x = 341,582.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.