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Finding the Fourth Proportional to 215,355.59, 323,079.53 and 65,607.93

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Solution

The fourth proportional to 215,355.59, 323,079.53 and 65,607.93 is: 98,425.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,355.59 : 323,079.53 = 65,607.93 : x
  2. Step 2: Convert to fraction form
    215,355.59/323,079.53 = 65,607.93/x
  3. Step 3: Cross multiply
    215,355.59x = 323,079.53 × 65,607.93
  4. Step 4: Simplify right side
    215,355.59x = 21,196,578,860.63
  5. Step 5: Solve for x
    x = 21,196,578,860.63/215,355.59
  6. Step 6: Final answer
    x = 98,425.95

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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.