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Finding the Fourth Proportional to 316,241.63, 436,416.89 and 172,998.60

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Solution

The fourth proportional to 316,241.63, 436,416.89 and 172,998.60 is: 238,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,241.63 : 436,416.89 = 172,998.60 : x
  2. Step 2: Convert to fraction form
    316,241.63/436,416.89 = 172,998.60/x
  3. Step 3: Cross multiply
    316,241.63x = 436,416.89 × 172,998.60
  4. Step 4: Simplify right side
    316,241.63x = 75,499,510,679.83
  5. Step 5: Solve for x
    x = 75,499,510,679.83/316,241.63
  6. Step 6: Final answer
    x = 238,739.95

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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.