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Finding the Fourth Proportional to 303,557.14, 455,256.32 and 90,267.64

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Solution

The fourth proportional to 303,557.14, 455,256.32 and 90,267.64 is: 135,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,557.14 : 455,256.32 = 90,267.64 : x
  2. Step 2: Convert to fraction form
    303,557.14/455,256.32 = 90,267.64/x
  3. Step 3: Cross multiply
    303,557.14x = 455,256.32 × 90,267.64
  4. Step 4: Simplify right side
    303,557.14x = 41,094,913,601.48
  5. Step 5: Solve for x
    x = 41,094,913,601.48/303,557.14
  6. Step 6: Final answer
    x = 135,377.85

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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.