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Finding the Fourth Proportional to 303,368.74, 455,053.12 and 284,669.89

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Solution

The fourth proportional to 303,368.74, 455,053.12 and 284,669.89 is: 427,004.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,368.74 : 455,053.12 = 284,669.89 : x
  2. Step 2: Convert to fraction form
    303,368.74/455,053.12 = 284,669.89/x
  3. Step 3: Cross multiply
    303,368.74x = 455,053.12 × 284,669.89
  4. Step 4: Simplify right side
    303,368.74x = 129,539,919,765.25
  5. Step 5: Solve for x
    x = 129,539,919,765.25/303,368.74
  6. Step 6: Final answer
    x = 427,004.84

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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.