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Finding the Fourth Proportional to 293,612.62, 440,428.07 and 139,704.88

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Solution

The fourth proportional to 293,612.62, 440,428.07 and 139,704.88 is: 209,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,612.62 : 440,428.07 = 139,704.88 : x
  2. Step 2: Convert to fraction form
    293,612.62/440,428.07 = 139,704.88/x
  3. Step 3: Cross multiply
    293,612.62x = 440,428.07 × 139,704.88
  4. Step 4: Simplify right side
    293,612.62x = 61,529,949,969.46
  5. Step 5: Solve for x
    x = 61,529,949,969.46/293,612.62
  6. Step 6: Final answer
    x = 209,561.67

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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.