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Finding the Fourth Proportional to 489,806.40, 734,536.80 and 174,273.60

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Solution

The fourth proportional to 489,806.40, 734,536.80 and 174,273.60 is: 261,348.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,806.40 : 734,536.80 = 174,273.60 : x
  2. Step 2: Convert to fraction form
    489,806.40/734,536.80 = 174,273.60/x
  3. Step 3: Cross multiply
    489,806.40x = 734,536.80 × 174,273.60
  4. Step 4: Simplify right side
    489,806.40x = 128,010,372,468.48
  5. Step 5: Solve for x
    x = 128,010,372,468.48/489,806.40
  6. Step 6: Final answer
    x = 261,348.92

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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.