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Finding the Fourth Proportional to 374,357.90, 561,273.84 and 131,139.47

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Solution

The fourth proportional to 374,357.90, 561,273.84 and 131,139.47 is: 196,617.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,357.90 : 561,273.84 = 131,139.47 : x
  2. Step 2: Convert to fraction form
    374,357.90/561,273.84 = 131,139.47/x
  3. Step 3: Cross multiply
    374,357.90x = 561,273.84 × 131,139.47
  4. Step 4: Simplify right side
    374,357.90x = 73,605,153,902.46
  5. Step 5: Solve for x
    x = 73,605,153,902.46/374,357.90
  6. Step 6: Final answer
    x = 196,617.07

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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.