Home / 287,341.24-431,079.26-87,661.56

Finding the Fourth Proportional to 287,341.24, 431,079.26 and 87,661.56

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Solution

The fourth proportional to 287,341.24, 431,079.26 and 87,661.56 is: 131,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,341.24 : 431,079.26 = 87,661.56 : x
  2. Step 2: Convert to fraction form
    287,341.24/431,079.26 = 87,661.56/x
  3. Step 3: Cross multiply
    287,341.24x = 431,079.26 × 87,661.56
  4. Step 4: Simplify right side
    287,341.24x = 37,789,080,415.25
  5. Step 5: Solve for x
    x = 37,789,080,415.25/287,341.24
  6. Step 6: Final answer
    x = 131,512.90

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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.