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Finding the Fourth Proportional to 318,536.72, 439,580.74 and 175,296.78

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Solution

The fourth proportional to 318,536.72, 439,580.74 and 175,296.78 is: 241,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,536.72 : 439,580.74 = 175,296.78 : x
  2. Step 2: Convert to fraction form
    318,536.72/439,580.74 = 175,296.78/x
  3. Step 3: Cross multiply
    318,536.72x = 439,580.74 × 175,296.78
  4. Step 4: Simplify right side
    318,536.72x = 77,057,088,272.02
  5. Step 5: Solve for x
    x = 77,057,088,272.02/318,536.72
  6. Step 6: Final answer
    x = 241,909.59

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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.