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Finding the Fourth Proportional to 289,794.70, 434,856.48 and 112,313.98

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Solution

The fourth proportional to 289,794.70, 434,856.48 and 112,313.98 is: 168,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,794.70 : 434,856.48 = 112,313.98 : x
  2. Step 2: Convert to fraction form
    289,794.70/434,856.48 = 112,313.98/x
  3. Step 3: Cross multiply
    289,794.70x = 434,856.48 × 112,313.98
  4. Step 4: Simplify right side
    289,794.70x = 48,840,461,997.59
  5. Step 5: Solve for x
    x = 48,840,461,997.59/289,794.70
  6. Step 6: Final answer
    x = 168,534.70

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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.