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Finding the Fourth Proportional to 374,582.90, 561,611.88 and 137,894.78

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Solution

The fourth proportional to 374,582.90, 561,611.88 and 137,894.78 is: 206,745.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,582.90 : 561,611.88 = 137,894.78 : x
  2. Step 2: Convert to fraction form
    374,582.90/561,611.88 = 137,894.78/x
  3. Step 3: Cross multiply
    374,582.90x = 561,611.88 × 137,894.78
  4. Step 4: Simplify right side
    374,582.90x = 77,443,346,637.99
  5. Step 5: Solve for x
    x = 77,443,346,637.99/374,582.90
  6. Step 6: Final answer
    x = 206,745.55

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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.