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Finding the Fourth Proportional to 317,693.70, 438,388.74 and 174,450.60

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Solution

The fourth proportional to 317,693.70, 438,388.74 and 174,450.60 is: 240,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,693.70 : 438,388.74 = 174,450.60 : x
  2. Step 2: Convert to fraction form
    317,693.70/438,388.74 = 174,450.60/x
  3. Step 3: Cross multiply
    317,693.70x = 438,388.74 × 174,450.60
  4. Step 4: Simplify right side
    317,693.70x = 76,477,178,726.24
  5. Step 5: Solve for x
    x = 76,477,178,726.24/317,693.70
  6. Step 6: Final answer
    x = 240,726.14

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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.