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Finding the Fourth Proportional to 303,409.17, 455,316.92 and 125,916.35

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Solution

The fourth proportional to 303,409.17, 455,316.92 and 125,916.35 is: 188,958.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,409.17 : 455,316.92 = 125,916.35 : x
  2. Step 2: Convert to fraction form
    303,409.17/455,316.92 = 125,916.35/x
  3. Step 3: Cross multiply
    303,409.17x = 455,316.92 × 125,916.35
  4. Step 4: Simplify right side
    303,409.17x = 57,331,841,753.48
  5. Step 5: Solve for x
    x = 57,331,841,753.48/303,409.17
  6. Step 6: Final answer
    x = 188,958.83

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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.