Home / 284,723.69-392,920.47-155,662.45

Finding the Fourth Proportional to 284,723.69, 392,920.47 and 155,662.45

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Solution

The fourth proportional to 284,723.69, 392,920.47 and 155,662.45 is: 214,815.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,723.69 : 392,920.47 = 155,662.45 : x
  2. Step 2: Convert to fraction form
    284,723.69/392,920.47 = 155,662.45/x
  3. Step 3: Cross multiply
    284,723.69x = 392,920.47 × 155,662.45
  4. Step 4: Simplify right side
    284,723.69x = 61,162,962,033.05
  5. Step 5: Solve for x
    x = 61,162,962,033.05/284,723.69
  6. Step 6: Final answer
    x = 214,815.15

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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.