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Finding the Fourth Proportional to 447,020.15, 616,635.33 and 265,790.53

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Solution

The fourth proportional to 447,020.15, 616,635.33 and 265,790.53 is: 366,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,020.15 : 616,635.33 = 265,790.53 : x
  2. Step 2: Convert to fraction form
    447,020.15/616,635.33 = 265,790.53/x
  3. Step 3: Cross multiply
    447,020.15x = 616,635.33 × 265,790.53
  4. Step 4: Simplify right side
    447,020.15x = 163,895,828,639.12
  5. Step 5: Solve for x
    x = 163,895,828,639.12/447,020.15
  6. Step 6: Final answer
    x = 366,640.81

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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.