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Finding the Fourth Proportional to 306,785.92, 423,301.12 and 179,436.80

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Solution

The fourth proportional to 306,785.92, 423,301.12 and 179,436.80 is: 247,585.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,785.92 : 423,301.12 = 179,436.80 : x
  2. Step 2: Convert to fraction form
    306,785.92/423,301.12 = 179,436.80/x
  3. Step 3: Cross multiply
    306,785.92x = 423,301.12 × 179,436.80
  4. Step 4: Simplify right side
    306,785.92x = 75,955,798,409.22
  5. Step 5: Solve for x
    x = 75,955,798,409.22/306,785.92
  6. Step 6: Final answer
    x = 247,585.67

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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.