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Finding the Fourth Proportional to 284,110.14, 392,081.41 and 155,055.68

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Solution

The fourth proportional to 284,110.14, 392,081.41 and 155,055.68 is: 213,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,110.14 : 392,081.41 = 155,055.68 : x
  2. Step 2: Convert to fraction form
    284,110.14/392,081.41 = 155,055.68/x
  3. Step 3: Cross multiply
    284,110.14x = 392,081.41 × 155,055.68
  4. Step 4: Simplify right side
    284,110.14x = 60,794,449,642.91
  5. Step 5: Solve for x
    x = 60,794,449,642.91/284,110.14
  6. Step 6: Final answer
    x = 213,981.98

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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.