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Finding the Fourth Proportional to 370,129.44, 510,740.60 and 215,056.56

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Solution

The fourth proportional to 370,129.44, 510,740.60 and 215,056.56 is: 296,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,129.44 : 510,740.60 = 215,056.56 : x
  2. Step 2: Convert to fraction form
    370,129.44/510,740.60 = 215,056.56/x
  3. Step 3: Cross multiply
    370,129.44x = 510,740.60 × 215,056.56
  4. Step 4: Simplify right side
    370,129.44x = 109,838,115,413.05
  5. Step 5: Solve for x
    x = 109,838,115,413.05/370,129.44
  6. Step 6: Final answer
    x = 296,755.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.