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Finding the Fourth Proportional to 303,562.05, 455,301.51 and 90,362.87

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Solution

The fourth proportional to 303,562.05, 455,301.51 and 90,362.87 is: 135,531.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,562.05 : 455,301.51 = 90,362.87 : x
  2. Step 2: Convert to fraction form
    303,562.05/455,301.51 = 90,362.87/x
  3. Step 3: Cross multiply
    303,562.05x = 455,301.51 × 90,362.87
  4. Step 4: Simplify right side
    303,562.05x = 41,142,351,158.93
  5. Step 5: Solve for x
    x = 41,142,351,158.93/303,562.05
  6. Step 6: Final answer
    x = 135,531.93

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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.