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Finding the Fourth Proportional to 256,021.04, 353,372.28 and 155,503.28

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Solution

The fourth proportional to 256,021.04, 353,372.28 and 155,503.28 is: 214,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,021.04 : 353,372.28 = 155,503.28 : x
  2. Step 2: Convert to fraction form
    256,021.04/353,372.28 = 155,503.28/x
  3. Step 3: Cross multiply
    256,021.04x = 353,372.28 × 155,503.28
  4. Step 4: Simplify right side
    256,021.04x = 54,950,548,601.08
  5. Step 5: Solve for x
    x = 54,950,548,601.08/256,021.04
  6. Step 6: Final answer
    x = 214,632.94

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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.