Home / 487,912.30-731,977.80-188,366.20

Finding the Fourth Proportional to 487,912.30, 731,977.80 and 188,366.20

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Solution

The fourth proportional to 487,912.30, 731,977.80 and 188,366.20 is: 282,591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,912.30 : 731,977.80 = 188,366.20 : x
  2. Step 2: Convert to fraction form
    487,912.30/731,977.80 = 188,366.20/x
  3. Step 3: Cross multiply
    487,912.30x = 731,977.80 × 188,366.20
  4. Step 4: Simplify right side
    487,912.30x = 137,879,876,670.36
  5. Step 5: Solve for x
    x = 137,879,876,670.36/487,912.30
  6. Step 6: Final answer
    x = 282,591.52

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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.