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Finding the Fourth Proportional to 543,626.87, 815,376.94 and 144,298.67

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Solution

The fourth proportional to 543,626.87, 815,376.94 and 144,298.67 is: 216,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,626.87 : 815,376.94 = 144,298.67 : x
  2. Step 2: Convert to fraction form
    543,626.87/815,376.94 = 144,298.67/x
  3. Step 3: Cross multiply
    543,626.87x = 815,376.94 × 144,298.67
  4. Step 4: Simplify right side
    543,626.87x = 117,657,803,553.04
  5. Step 5: Solve for x
    x = 117,657,803,553.04/543,626.87
  6. Step 6: Final answer
    x = 216,431.18

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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.