Home / 284,379.28-392,437.20-155,313.52

Finding the Fourth Proportional to 284,379.28, 392,437.20 and 155,313.52

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Solution

The fourth proportional to 284,379.28, 392,437.20 and 155,313.52 is: 214,329.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,379.28 : 392,437.20 = 155,313.52 : x
  2. Step 2: Convert to fraction form
    284,379.28/392,437.20 = 155,313.52/x
  3. Step 3: Cross multiply
    284,379.28x = 392,437.20 × 155,313.52
  4. Step 4: Simplify right side
    284,379.28x = 60,950,802,910.94
  5. Step 5: Solve for x
    x = 60,950,802,910.94/284,379.28
  6. Step 6: Final answer
    x = 214,329.27

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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.