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Finding the Fourth Proportional to 316,441.60, 436,689.56 and 173,202.42

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Solution

The fourth proportional to 316,441.60, 436,689.56 and 173,202.42 is: 239,019.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,441.60 : 436,689.56 = 173,202.42 : x
  2. Step 2: Convert to fraction form
    316,441.60/436,689.56 = 173,202.42/x
  3. Step 3: Cross multiply
    316,441.60x = 436,689.56 × 173,202.42
  4. Step 4: Simplify right side
    316,441.60x = 75,635,688,580.74
  5. Step 5: Solve for x
    x = 75,635,688,580.74/316,441.60
  6. Step 6: Final answer
    x = 239,019.42

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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.