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Finding the Fourth Proportional to 318,798.78, 439,942.37 and 175,558.49

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Solution

The fourth proportional to 318,798.78, 439,942.37 and 175,558.49 is: 242,270.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,798.78 : 439,942.37 = 175,558.49 : x
  2. Step 2: Convert to fraction form
    318,798.78/439,942.37 = 175,558.49/x
  3. Step 3: Cross multiply
    318,798.78x = 439,942.37 × 175,558.49
  4. Step 4: Simplify right side
    318,798.78x = 77,235,615,964.51
  5. Step 5: Solve for x
    x = 77,235,615,964.51/318,798.78
  6. Step 6: Final answer
    x = 242,270.74

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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.