Home / 284,724.36-392,920.86-155,665.56

Finding the Fourth Proportional to 284,724.36, 392,920.86 and 155,665.56

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Solution

The fourth proportional to 284,724.36, 392,920.86 and 155,665.56 is: 214,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,724.36 : 392,920.86 = 155,665.56 : x
  2. Step 2: Convert to fraction form
    284,724.36/392,920.86 = 155,665.56/x
  3. Step 3: Cross multiply
    284,724.36x = 392,920.86 × 155,665.56
  4. Step 4: Simplify right side
    284,724.36x = 61,164,245,707.58
  5. Step 5: Solve for x
    x = 61,164,245,707.58/284,724.36
  6. Step 6: Final answer
    x = 214,819.15

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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.