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Finding the Fourth Proportional to 262,389.83, 393,586.57 and 112,503.78

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Solution

The fourth proportional to 262,389.83, 393,586.57 and 112,503.78 is: 168,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,389.83 : 393,586.57 = 112,503.78 : x
  2. Step 2: Convert to fraction form
    262,389.83/393,586.57 = 112,503.78/x
  3. Step 3: Cross multiply
    262,389.83x = 393,586.57 × 112,503.78
  4. Step 4: Simplify right side
    262,389.83x = 44,279,976,390.03
  5. Step 5: Solve for x
    x = 44,279,976,390.03/262,389.83
  6. Step 6: Final answer
    x = 168,756.45

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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.