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Finding the Fourth Proportional to 262,275.60, 393,413.40 and 84,909.90

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Solution

The fourth proportional to 262,275.60, 393,413.40 and 84,909.90 is: 127,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,275.60 : 393,413.40 = 84,909.90 : x
  2. Step 2: Convert to fraction form
    262,275.60/393,413.40 = 84,909.90/x
  3. Step 3: Cross multiply
    262,275.60x = 393,413.40 × 84,909.90
  4. Step 4: Simplify right side
    262,275.60x = 33,404,692,452.66
  5. Step 5: Solve for x
    x = 33,404,692,452.66/262,275.60
  6. Step 6: Final answer
    x = 127,364.85

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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.