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Finding the Fourth Proportional to 284,261.01, 392,269.89 and 155,197.10

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Solution

The fourth proportional to 284,261.01, 392,269.89 and 155,197.10 is: 214,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,261.01 : 392,269.89 = 155,197.10 : x
  2. Step 2: Convert to fraction form
    284,261.01/392,269.89 = 155,197.10/x
  3. Step 3: Cross multiply
    284,261.01x = 392,269.89 × 155,197.10
  4. Step 4: Simplify right side
    284,261.01x = 60,879,149,793.66
  5. Step 5: Solve for x
    x = 60,879,149,793.66/284,261.01
  6. Step 6: Final answer
    x = 214,166.38

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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.