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Finding the Fourth Proportional to 256,039.79, 353,398.16 and 155,522.03

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Solution

The fourth proportional to 256,039.79, 353,398.16 and 155,522.03 is: 214,658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,039.79 : 353,398.16 = 155,522.03 : x
  2. Step 2: Convert to fraction form
    256,039.79/353,398.16 = 155,522.03/x
  3. Step 3: Cross multiply
    256,039.79x = 353,398.16 × 155,522.03
  4. Step 4: Simplify right side
    256,039.79x = 54,961,198,463.85
  5. Step 5: Solve for x
    x = 54,961,198,463.85/256,039.79
  6. Step 6: Final answer
    x = 214,658.82

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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.