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Finding the Fourth Proportional to 284,608.09, 392,760.39 and 155,549.17

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Solution

The fourth proportional to 284,608.09, 392,760.39 and 155,549.17 is: 214,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,608.09 : 392,760.39 = 155,549.17 : x
  2. Step 2: Convert to fraction form
    284,608.09/392,760.39 = 155,549.17/x
  3. Step 3: Cross multiply
    284,608.09x = 392,760.39 × 155,549.17
  4. Step 4: Simplify right side
    284,608.09x = 61,093,552,673.38
  5. Step 5: Solve for x
    x = 61,093,552,673.38/284,608.09
  6. Step 6: Final answer
    x = 214,658.52

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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.