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Finding the Fourth Proportional to 889,157, 1,333,738.92 and 215,237.20

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Solution

The fourth proportional to 889,157, 1,333,738.92 and 215,237.20 is: 322,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,157 : 1,333,738.92 = 215,237.20 : x
  2. Step 2: Convert to fraction form
    889,157/1,333,738.92 = 215,237.20/x
  3. Step 3: Cross multiply
    889,157x = 1,333,738.92 × 215,237.20
  4. Step 4: Simplify right side
    889,157x = 287,070,230,671.82
  5. Step 5: Solve for x
    x = 287,070,230,671.82/889,157
  6. Step 6: Final answer
    x = 322,856.63

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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.