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Finding the Fourth Proportional to 284,612.54, 392,773.44 and 155,558.21

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Solution

The fourth proportional to 284,612.54, 392,773.44 and 155,558.21 is: 214,674.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,612.54 : 392,773.44 = 155,558.21 : x
  2. Step 2: Convert to fraction form
    284,612.54/392,773.44 = 155,558.21/x
  3. Step 3: Cross multiply
    284,612.54x = 392,773.44 × 155,558.21
  4. Step 4: Simplify right side
    284,612.54x = 61,099,131,298.08
  5. Step 5: Solve for x
    x = 61,099,131,298.08/284,612.54
  6. Step 6: Final answer
    x = 214,674.77

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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.