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Finding the Fourth Proportional to 243,505.18, 364,754.59 and 143,356.78

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Solution

The fourth proportional to 243,505.18, 364,754.59 and 143,356.78 is: 214,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,505.18 : 364,754.59 = 143,356.78 : x
  2. Step 2: Convert to fraction form
    243,505.18/364,754.59 = 143,356.78/x
  3. Step 3: Cross multiply
    243,505.18x = 364,754.59 × 143,356.78
  4. Step 4: Simplify right side
    243,505.18x = 52,290,043,512.62
  5. Step 5: Solve for x
    x = 52,290,043,512.62/243,505.18
  6. Step 6: Final answer
    x = 214,738.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.