Home / 284,976.88-393,256.28-155,914.72

Finding the Fourth Proportional to 284,976.88, 393,256.28 and 155,914.72

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Solution

The fourth proportional to 284,976.88, 393,256.28 and 155,914.72 is: 215,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,976.88 : 393,256.28 = 155,914.72 : x
  2. Step 2: Convert to fraction form
    284,976.88/393,256.28 = 155,914.72/x
  3. Step 3: Cross multiply
    284,976.88x = 393,256.28 × 155,914.72
  4. Step 4: Simplify right side
    284,976.88x = 61,314,442,784.44
  5. Step 5: Solve for x
    x = 61,314,442,784.44/284,976.88
  6. Step 6: Final answer
    x = 215,155.85

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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.