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Finding the Fourth Proportional to 215,289.88, 322,951.38 and 65,543.02

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Solution

The fourth proportional to 215,289.88, 322,951.38 and 65,543.02 is: 98,319.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,289.88 : 322,951.38 = 65,543.02 : x
  2. Step 2: Convert to fraction form
    215,289.88/322,951.38 = 65,543.02/x
  3. Step 3: Cross multiply
    215,289.88x = 322,951.38 × 65,543.02
  4. Step 4: Simplify right side
    215,289.88x = 21,167,208,758.37
  5. Step 5: Solve for x
    x = 21,167,208,758.37/215,289.88
  6. Step 6: Final answer
    x = 98,319.57

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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.