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Finding the Fourth Proportional to 489,812.40, 734,545.80 and 174,279.60

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Solution

The fourth proportional to 489,812.40, 734,545.80 and 174,279.60 is: 261,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,812.40 : 734,545.80 = 174,279.60 : x
  2. Step 2: Convert to fraction form
    489,812.40/734,545.80 = 174,279.60/x
  3. Step 3: Cross multiply
    489,812.40x = 734,545.80 × 174,279.60
  4. Step 4: Simplify right side
    489,812.40x = 128,016,348,205.68
  5. Step 5: Solve for x
    x = 128,016,348,205.68/489,812.40
  6. Step 6: Final answer
    x = 261,357.92

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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.