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Finding the Fourth Proportional to 289,553.52, 434,182.18 and 121,027.86

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Solution

The fourth proportional to 289,553.52, 434,182.18 and 121,027.86 is: 181,479.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,553.52 : 434,182.18 = 121,027.86 : x
  2. Step 2: Convert to fraction form
    289,553.52/434,182.18 = 121,027.86/x
  3. Step 3: Cross multiply
    289,553.52x = 434,182.18 × 121,027.86
  4. Step 4: Simplify right side
    289,553.52x = 52,548,140,095.53
  5. Step 5: Solve for x
    x = 52,548,140,095.53/289,553.52
  6. Step 6: Final answer
    x = 181,479.89

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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.