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Finding the Fourth Proportional to 303,987.74, 456,004.53 and 90,738.81

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Solution

The fourth proportional to 303,987.74, 456,004.53 and 90,738.81 is: 136,115.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,987.74 : 456,004.53 = 90,738.81 : x
  2. Step 2: Convert to fraction form
    303,987.74/456,004.53 = 90,738.81/x
  3. Step 3: Cross multiply
    303,987.74x = 456,004.53 × 90,738.81
  4. Step 4: Simplify right side
    303,987.74x = 41,377,308,406.81
  5. Step 5: Solve for x
    x = 41,377,308,406.81/303,987.74
  6. Step 6: Final answer
    x = 136,115.06

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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.