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Finding the Fourth Proportional to 289,500.63, 434,230.02 and 89,815.79

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Solution

The fourth proportional to 289,500.63, 434,230.02 and 89,815.79 is: 134,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,500.63 : 434,230.02 = 89,815.79 : x
  2. Step 2: Convert to fraction form
    289,500.63/434,230.02 = 89,815.79/x
  3. Step 3: Cross multiply
    289,500.63x = 434,230.02 × 89,815.79
  4. Step 4: Simplify right side
    289,500.63x = 39,000,710,116.87
  5. Step 5: Solve for x
    x = 39,000,710,116.87/289,500.63
  6. Step 6: Final answer
    x = 134,717.19

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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.