Home / 268,391.07-402,588.33-78,850.67

Finding the Fourth Proportional to 268,391.07, 402,588.33 and 78,850.67

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Solution

The fourth proportional to 268,391.07, 402,588.33 and 78,850.67 is: 118,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,391.07 : 402,588.33 = 78,850.67 : x
  2. Step 2: Convert to fraction form
    268,391.07/402,588.33 = 78,850.67/x
  3. Step 3: Cross multiply
    268,391.07x = 402,588.33 × 78,850.67
  4. Step 4: Simplify right side
    268,391.07x = 31,744,357,246.05
  5. Step 5: Solve for x
    x = 31,744,357,246.05/268,391.07
  6. Step 6: Final answer
    x = 118,276.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.