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Finding the Fourth Proportional to 316,455.48, 436,712.68 and 173,212.44

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Solution

The fourth proportional to 316,455.48, 436,712.68 and 173,212.44 is: 239,035.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,455.48 : 436,712.68 = 173,212.44 : x
  2. Step 2: Convert to fraction form
    316,455.48/436,712.68 = 173,212.44/x
  3. Step 3: Cross multiply
    316,455.48x = 436,712.68 × 173,212.44
  4. Step 4: Simplify right side
    316,455.48x = 75,644,068,881.74
  5. Step 5: Solve for x
    x = 75,644,068,881.74/316,455.48
  6. Step 6: Final answer
    x = 239,035.42

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1.5x scale

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.