Home / 287,879.07-432,192.79-221,365.90

Finding the Fourth Proportional to 287,879.07, 432,192.79 and 221,365.90

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Solution

The fourth proportional to 287,879.07, 432,192.79 and 221,365.90 is: 332,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,879.07 : 432,192.79 = 221,365.90 : x
  2. Step 2: Convert to fraction form
    287,879.07/432,192.79 = 221,365.90/x
  3. Step 3: Cross multiply
    287,879.07x = 432,192.79 × 221,365.90
  4. Step 4: Simplify right side
    287,879.07x = 95,672,743,695.13
  5. Step 5: Solve for x
    x = 95,672,743,695.13/287,879.07
  6. Step 6: Final answer
    x = 332,336.57

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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.