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Finding the Fourth Proportional to 243,057.34, 335,369.04 and 139,671.54

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Solution

The fourth proportional to 243,057.34, 335,369.04 and 139,671.54 is: 192,717.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,057.34 : 335,369.04 = 139,671.54 : x
  2. Step 2: Convert to fraction form
    243,057.34/335,369.04 = 139,671.54/x
  3. Step 3: Cross multiply
    243,057.34x = 335,369.04 × 139,671.54
  4. Step 4: Simplify right side
    243,057.34x = 46,841,510,285.12
  5. Step 5: Solve for x
    x = 46,841,510,285.12/243,057.34
  6. Step 6: Final answer
    x = 192,717.94

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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.