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Finding the Fourth Proportional to 249,893.66, 374,840.19 and 81,413.71

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Solution

The fourth proportional to 249,893.66, 374,840.19 and 81,413.71 is: 122,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,893.66 : 374,840.19 = 81,413.71 : x
  2. Step 2: Convert to fraction form
    249,893.66/374,840.19 = 81,413.71/x
  3. Step 3: Cross multiply
    249,893.66x = 374,840.19 × 81,413.71
  4. Step 4: Simplify right side
    249,893.66x = 30,517,129,587.90
  5. Step 5: Solve for x
    x = 30,517,129,587.90/249,893.66
  6. Step 6: Final answer
    x = 122,120.46

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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.