Home / 287,578.20-431,367.30-264,833.40

Finding the Fourth Proportional to 287,578.20, 431,367.30 and 264,833.40

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Solution

The fourth proportional to 287,578.20, 431,367.30 and 264,833.40 is: 397,250.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,578.20 : 431,367.30 = 264,833.40 : x
  2. Step 2: Convert to fraction form
    287,578.20/431,367.30 = 264,833.40/x
  3. Step 3: Cross multiply
    287,578.20x = 431,367.30 × 264,833.40
  4. Step 4: Simplify right side
    287,578.20x = 114,240,468,707.82
  5. Step 5: Solve for x
    x = 114,240,468,707.82/287,578.20
  6. Step 6: Final answer
    x = 397,250.10

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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.