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Finding the Fourth Proportional to 374,565.78, 561,833.78 and 206,419.50

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Solution

The fourth proportional to 374,565.78, 561,833.78 and 206,419.50 is: 309,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,565.78 : 561,833.78 = 206,419.50 : x
  2. Step 2: Convert to fraction form
    374,565.78/561,833.78 = 206,419.50/x
  3. Step 3: Cross multiply
    374,565.78x = 561,833.78 × 206,419.50
  4. Step 4: Simplify right side
    374,565.78x = 115,973,446,918.61
  5. Step 5: Solve for x
    x = 115,973,446,918.61/374,565.78
  6. Step 6: Final answer
    x = 309,621.04

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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.