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Finding the Fourth Proportional to 215,118.98, 322,695.54 and 65,372.34

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Solution

The fourth proportional to 215,118.98, 322,695.54 and 65,372.34 is: 98,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,118.98 : 322,695.54 = 65,372.34 : x
  2. Step 2: Convert to fraction form
    215,118.98/322,695.54 = 65,372.34/x
  3. Step 3: Cross multiply
    215,118.98x = 322,695.54 × 65,372.34
  4. Step 4: Simplify right side
    215,118.98x = 21,095,362,557.36
  5. Step 5: Solve for x
    x = 21,095,362,557.36/215,118.98
  6. Step 6: Final answer
    x = 98,063.70

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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.