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Finding the Fourth Proportional to 318,605.76, 439,672.44 and 175,362.72

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Solution

The fourth proportional to 318,605.76, 439,672.44 and 175,362.72 is: 241,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,605.76 : 439,672.44 = 175,362.72 : x
  2. Step 2: Convert to fraction form
    318,605.76/439,672.44 = 175,362.72/x
  3. Step 3: Cross multiply
    318,605.76x = 439,672.44 × 175,362.72
  4. Step 4: Simplify right side
    318,605.76x = 77,102,154,987.44
  5. Step 5: Solve for x
    x = 77,102,154,987.44/318,605.76
  6. Step 6: Final answer
    x = 241,998.62

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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.