Home / 284,118.09-392,085.11-155,057.55

Finding the Fourth Proportional to 284,118.09, 392,085.11 and 155,057.55

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Solution

The fourth proportional to 284,118.09, 392,085.11 and 155,057.55 is: 213,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,118.09 : 392,085.11 = 155,057.55 : x
  2. Step 2: Convert to fraction form
    284,118.09/392,085.11 = 155,057.55/x
  3. Step 3: Cross multiply
    284,118.09x = 392,085.11 × 155,057.55
  4. Step 4: Simplify right side
    284,118.09x = 60,795,756,548.08
  5. Step 5: Solve for x
    x = 60,795,756,548.08/284,118.09
  6. Step 6: Final answer
    x = 213,980.59

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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.