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Finding the Fourth Proportional to 489,085.80, 732,753.90 and 301,878.60

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Solution

The fourth proportional to 489,085.80, 732,753.90 and 301,878.60 is: 452,277.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,085.80 : 732,753.90 = 301,878.60 : x
  2. Step 2: Convert to fraction form
    489,085.80/732,753.90 = 301,878.60/x
  3. Step 3: Cross multiply
    489,085.80x = 732,753.90 × 301,878.60
  4. Step 4: Simplify right side
    489,085.80x = 221,202,721,476.54
  5. Step 5: Solve for x
    x = 221,202,721,476.54/489,085.80
  6. Step 6: Final answer
    x = 452,277.95

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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.