Home / 287,543.46-431,392.83-87,858.37

Finding the Fourth Proportional to 287,543.46, 431,392.83 and 87,858.37

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Solution

The fourth proportional to 287,543.46, 431,392.83 and 87,858.37 is: 131,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,543.46 : 431,392.83 = 87,858.37 : x
  2. Step 2: Convert to fraction form
    287,543.46/431,392.83 = 87,858.37/x
  3. Step 3: Cross multiply
    287,543.46x = 431,392.83 × 87,858.37
  4. Step 4: Simplify right side
    287,543.46x = 37,901,470,873.49
  5. Step 5: Solve for x
    x = 37,901,470,873.49/287,543.46
  6. Step 6: Final answer
    x = 131,811.28

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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.