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Finding the Fourth Proportional to 306,716.06, 423,287.50 and 185,867.92

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Solution

The fourth proportional to 306,716.06, 423,287.50 and 185,867.92 is: 256,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,716.06 : 423,287.50 = 185,867.92 : x
  2. Step 2: Convert to fraction form
    306,716.06/423,287.50 = 185,867.92/x
  3. Step 3: Cross multiply
    306,716.06x = 423,287.50 × 185,867.92
  4. Step 4: Simplify right side
    306,716.06x = 78,675,567,187
  5. Step 5: Solve for x
    x = 78,675,567,187/306,716.06
  6. Step 6: Final answer
    x = 256,509.45

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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.