Home / 284,441.82-392,520.78-155,378.22

Finding the Fourth Proportional to 284,441.82, 392,520.78 and 155,378.22

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Solution

The fourth proportional to 284,441.82, 392,520.78 and 155,378.22 is: 214,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,441.82 : 392,520.78 = 155,378.22 : x
  2. Step 2: Convert to fraction form
    284,441.82/392,520.78 = 155,378.22/x
  3. Step 3: Cross multiply
    284,441.82x = 392,520.78 × 155,378.22
  4. Step 4: Simplify right side
    284,441.82x = 60,989,180,109.41
  5. Step 5: Solve for x
    x = 60,989,180,109.41/284,441.82
  6. Step 6: Final answer
    x = 214,417.06

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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.