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Finding the Fourth Proportional to 316,261.53, 436,440.69 and 173,021.67

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Solution

The fourth proportional to 316,261.53, 436,440.69 and 173,021.67 is: 238,769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,261.53 : 436,440.69 = 173,021.67 : x
  2. Step 2: Convert to fraction form
    316,261.53/436,440.69 = 173,021.67/x
  3. Step 3: Cross multiply
    316,261.53x = 436,440.69 × 173,021.67
  4. Step 4: Simplify right side
    316,261.53x = 75,513,697,039.75
  5. Step 5: Solve for x
    x = 75,513,697,039.75/316,261.53
  6. Step 6: Final answer
    x = 238,769.78

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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.