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Finding the Fourth Proportional to 303,580.83, 455,357.75 and 103,919.07

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Solution

The fourth proportional to 303,580.83, 455,357.75 and 103,919.07 is: 155,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,580.83 : 455,357.75 = 103,919.07 : x
  2. Step 2: Convert to fraction form
    303,580.83/455,357.75 = 103,919.07/x
  3. Step 3: Cross multiply
    303,580.83x = 455,357.75 × 103,919.07
  4. Step 4: Simplify right side
    303,580.83x = 47,320,353,377.70
  5. Step 5: Solve for x
    x = 47,320,353,377.70/303,580.83
  6. Step 6: Final answer
    x = 155,873.98

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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.