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Finding the Fourth Proportional to 303,410.22, 455,036.51 and 90,128.00

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Solution

The fourth proportional to 303,410.22, 455,036.51 and 90,128.00 is: 135,168.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,410.22 : 455,036.51 = 90,128.00 : x
  2. Step 2: Convert to fraction form
    303,410.22/455,036.51 = 90,128.00/x
  3. Step 3: Cross multiply
    303,410.22x = 455,036.51 × 90,128.00
  4. Step 4: Simplify right side
    303,410.22x = 41,011,529,545.60
  5. Step 5: Solve for x
    x = 41,011,529,545.60/303,410.22
  6. Step 6: Final answer
    x = 135,168.58

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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.