Home / 284,891.12-393,133.80-155,803.92

Finding the Fourth Proportional to 284,891.12, 393,133.80 and 155,803.92

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Solution

The fourth proportional to 284,891.12, 393,133.80 and 155,803.92 is: 215,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,891.12 : 393,133.80 = 155,803.92 : x
  2. Step 2: Convert to fraction form
    284,891.12/393,133.80 = 155,803.92/x
  3. Step 3: Cross multiply
    284,891.12x = 393,133.80 × 155,803.92
  4. Step 4: Simplify right side
    284,891.12x = 61,251,787,124.50
  5. Step 5: Solve for x
    x = 61,251,787,124.50/284,891.12
  6. Step 6: Final answer
    x = 215,000.69

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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.