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Finding the Fourth Proportional to 289,706.10, 434,559.15 and 102,693.30

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Solution

The fourth proportional to 289,706.10, 434,559.15 and 102,693.30 is: 154,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,706.10 : 434,559.15 = 102,693.30 : x
  2. Step 2: Convert to fraction form
    289,706.10/434,559.15 = 102,693.30/x
  3. Step 3: Cross multiply
    289,706.10x = 434,559.15 × 102,693.30
  4. Step 4: Simplify right side
    289,706.10x = 44,626,313,158.70
  5. Step 5: Solve for x
    x = 44,626,313,158.70/289,706.10
  6. Step 6: Final answer
    x = 154,039.95

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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.