Home / 308,313.06-425,540.66-187,428.75

Finding the Fourth Proportional to 308,313.06, 425,540.66 and 187,428.75

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Solution

The fourth proportional to 308,313.06, 425,540.66 and 187,428.75 is: 258,693.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,313.06 : 425,540.66 = 187,428.75 : x
  2. Step 2: Convert to fraction form
    308,313.06/425,540.66 = 187,428.75/x
  3. Step 3: Cross multiply
    308,313.06x = 425,540.66 × 187,428.75
  4. Step 4: Simplify right side
    308,313.06x = 79,758,553,040.83
  5. Step 5: Solve for x
    x = 79,758,553,040.83/308,313.06
  6. Step 6: Final answer
    x = 258,693.40

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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.