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Finding the Fourth Proportional to 291,328.53, 436,843.76 and 133,421.67

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Solution

The fourth proportional to 291,328.53, 436,843.76 and 133,421.67 is: 200,064.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,328.53 : 436,843.76 = 133,421.67 : x
  2. Step 2: Convert to fraction form
    291,328.53/436,843.76 = 133,421.67/x
  3. Step 3: Cross multiply
    291,328.53x = 436,843.76 × 133,421.67
  4. Step 4: Simplify right side
    291,328.53x = 58,284,423,321.17
  5. Step 5: Solve for x
    x = 58,284,423,321.17/291,328.53
  6. Step 6: Final answer
    x = 200,064.25

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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.