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Finding the Fourth Proportional to 303,916.30, 455,273.02 and 266,518.60

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Solution

The fourth proportional to 303,916.30, 455,273.02 and 266,518.60 is: 399,250.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,916.30 : 455,273.02 = 266,518.60 : x
  2. Step 2: Convert to fraction form
    303,916.30/455,273.02 = 266,518.60/x
  3. Step 3: Cross multiply
    303,916.30x = 455,273.02 × 266,518.60
  4. Step 4: Simplify right side
    303,916.30x = 121,338,727,908.17
  5. Step 5: Solve for x
    x = 121,338,727,908.17/303,916.30
  6. Step 6: Final answer
    x = 399,250.48

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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.