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Finding the Fourth Proportional to 253,398.90, 380,590.42 and 186,575.10

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Solution

The fourth proportional to 253,398.90, 380,590.42 and 186,575.10 is: 280,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,398.90 : 380,590.42 = 186,575.10 : x
  2. Step 2: Convert to fraction form
    253,398.90/380,590.42 = 186,575.10/x
  3. Step 3: Cross multiply
    253,398.90x = 380,590.42 × 186,575.10
  4. Step 4: Simplify right side
    253,398.90x = 71,008,695,670.54
  5. Step 5: Solve for x
    x = 71,008,695,670.54/253,398.90
  6. Step 6: Final answer
    x = 280,224.96

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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.