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Finding the Fourth Proportional to 284,618.97, 392,774.81 and 155,559.51

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Solution

The fourth proportional to 284,618.97, 392,774.81 and 155,559.51 is: 214,672.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,618.97 : 392,774.81 = 155,559.51 : x
  2. Step 2: Convert to fraction form
    284,618.97/392,774.81 = 155,559.51/x
  3. Step 3: Cross multiply
    284,618.97x = 392,774.81 × 155,559.51
  4. Step 4: Simplify right side
    284,618.97x = 61,099,856,206.15
  5. Step 5: Solve for x
    x = 61,099,856,206.15/284,618.97
  6. Step 6: Final answer
    x = 214,672.47

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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.