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Finding the Fourth Proportional to 303,515.55, 455,273.33 and 185,417.55

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Solution

The fourth proportional to 303,515.55, 455,273.33 and 185,417.55 is: 278,126.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,515.55 : 455,273.33 = 185,417.55 : x
  2. Step 2: Convert to fraction form
    303,515.55/455,273.33 = 185,417.55/x
  3. Step 3: Cross multiply
    303,515.55x = 455,273.33 × 185,417.55
  4. Step 4: Simplify right side
    303,515.55x = 84,415,664,501.85
  5. Step 5: Solve for x
    x = 84,415,664,501.85/303,515.55
  6. Step 6: Final answer
    x = 278,126.33

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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.