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Finding the Fourth Proportional to 243,174.69, 335,579.81 and 141,225.21

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Solution

The fourth proportional to 243,174.69, 335,579.81 and 141,225.21 is: 194,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,174.69 : 335,579.81 = 141,225.21 : x
  2. Step 2: Convert to fraction form
    243,174.69/335,579.81 = 141,225.21/x
  3. Step 3: Cross multiply
    243,174.69x = 335,579.81 × 141,225.21
  4. Step 4: Simplify right side
    243,174.69x = 47,392,328,432.88
  5. Step 5: Solve for x
    x = 47,392,328,432.88/243,174.69
  6. Step 6: Final answer
    x = 194,890.05

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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.