Home / 285,040.26-393,349.49-155,978.22

Finding the Fourth Proportional to 285,040.26, 393,349.49 and 155,978.22

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Solution

The fourth proportional to 285,040.26, 393,349.49 and 155,978.22 is: 215,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,040.26 : 393,349.49 = 155,978.22 : x
  2. Step 2: Convert to fraction form
    285,040.26/393,349.49 = 155,978.22/x
  3. Step 3: Cross multiply
    285,040.26x = 393,349.49 × 155,978.22
  4. Step 4: Simplify right side
    285,040.26x = 61,353,952,202.99
  5. Step 5: Solve for x
    x = 61,353,952,202.99/285,040.26
  6. Step 6: Final answer
    x = 215,246.62

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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.