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Finding the Fourth Proportional to 284,512.02, 392,622 and 155,447.73

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Solution

The fourth proportional to 284,512.02, 392,622 and 155,447.73 is: 214,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,512.02 : 392,622 = 155,447.73 : x
  2. Step 2: Convert to fraction form
    284,512.02/392,622 = 155,447.73/x
  3. Step 3: Cross multiply
    284,512.02x = 392,622 × 155,447.73
  4. Step 4: Simplify right side
    284,512.02x = 61,032,198,648.06
  5. Step 5: Solve for x
    x = 61,032,198,648.06/284,512.02
  6. Step 6: Final answer
    x = 214,515.36

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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.