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Finding the Fourth Proportional to 318,064.92, 438,930.54 and 174,839.64

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Solution

The fourth proportional to 318,064.92, 438,930.54 and 174,839.64 is: 241,279.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,064.92 : 438,930.54 = 174,839.64 : x
  2. Step 2: Convert to fraction form
    318,064.92/438,930.54 = 174,839.64/x
  3. Step 3: Cross multiply
    318,064.92x = 438,930.54 × 174,839.64
  4. Step 4: Simplify right side
    318,064.92x = 76,742,457,598.61
  5. Step 5: Solve for x
    x = 76,742,457,598.61/318,064.92
  6. Step 6: Final answer
    x = 241,279.23

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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.