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Finding the Fourth Proportional to 447,128.96, 616,725.52 and 303,639.92

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Solution

The fourth proportional to 447,128.96, 616,725.52 and 303,639.92 is: 418,810.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,128.96 : 616,725.52 = 303,639.92 : x
  2. Step 2: Convert to fraction form
    447,128.96/616,725.52 = 303,639.92/x
  3. Step 3: Cross multiply
    447,128.96x = 616,725.52 × 303,639.92
  4. Step 4: Simplify right side
    447,128.96x = 187,262,487,554.76
  5. Step 5: Solve for x
    x = 187,262,487,554.76/447,128.96
  6. Step 6: Final answer
    x = 418,810.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.