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Finding the Fourth Proportional to 635,535.21, 877,035.60 and 345,144.75

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Solution

The fourth proportional to 635,535.21, 877,035.60 and 345,144.75 is: 476,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,535.21 : 877,035.60 = 345,144.75 : x
  2. Step 2: Convert to fraction form
    635,535.21/877,035.60 = 345,144.75/x
  3. Step 3: Cross multiply
    635,535.21x = 877,035.60 × 345,144.75
  4. Step 4: Simplify right side
    635,535.21x = 302,704,229,614.22
  5. Step 5: Solve for x
    x = 302,704,229,614.22/635,535.21
  6. Step 6: Final answer
    x = 476,298.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.