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Finding the Fourth Proportional to 316,911.53, 437,341.36 and 173,668.50

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Solution

The fourth proportional to 316,911.53, 437,341.36 and 173,668.50 is: 239,664.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,911.53 : 437,341.36 = 173,668.50 : x
  2. Step 2: Convert to fraction form
    316,911.53/437,341.36 = 173,668.50/x
  3. Step 3: Cross multiply
    316,911.53x = 437,341.36 × 173,668.50
  4. Step 4: Simplify right side
    316,911.53x = 75,952,417,544.99
  5. Step 5: Solve for x
    x = 75,952,417,544.99/316,911.53
  6. Step 6: Final answer
    x = 239,664.42

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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.