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Finding the Fourth Proportional to 347,814.90, 521,418.60 and 134,728.20

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Solution

The fourth proportional to 347,814.90, 521,418.60 and 134,728.20 is: 201,974.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,814.90 : 521,418.60 = 134,728.20 : x
  2. Step 2: Convert to fraction form
    347,814.90/521,418.60 = 134,728.20/x
  3. Step 3: Cross multiply
    347,814.90x = 521,418.60 × 134,728.20
  4. Step 4: Simplify right side
    347,814.90x = 70,249,789,424.52
  5. Step 5: Solve for x
    x = 70,249,789,424.52/347,814.90
  6. Step 6: Final answer
    x = 201,974.64

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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.