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Finding the Fourth Proportional to 208,479.78, 312,658.32 and 94,561.68

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Solution

The fourth proportional to 208,479.78, 312,658.32 and 94,561.68 is: 141,814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,479.78 : 312,658.32 = 94,561.68 : x
  2. Step 2: Convert to fraction form
    208,479.78/312,658.32 = 94,561.68/x
  3. Step 3: Cross multiply
    208,479.78x = 312,658.32 × 94,561.68
  4. Step 4: Simplify right side
    208,479.78x = 29,565,496,005.18
  5. Step 5: Solve for x
    x = 29,565,496,005.18/208,479.78
  6. Step 6: Final answer
    x = 141,814.69

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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.