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Finding the Fourth Proportional to 291,812.90, 437,379.15 and 134,057.30

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Solution

The fourth proportional to 291,812.90, 437,379.15 and 134,057.30 is: 200,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,812.90 : 437,379.15 = 134,057.30 : x
  2. Step 2: Convert to fraction form
    291,812.90/437,379.15 = 134,057.30/x
  3. Step 3: Cross multiply
    291,812.90x = 437,379.15 × 134,057.30
  4. Step 4: Simplify right side
    291,812.90x = 58,633,867,925.30
  5. Step 5: Solve for x
    x = 58,633,867,925.30/291,812.90
  6. Step 6: Final answer
    x = 200,929.66

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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.