Home / 145,486.13-218,204.35-40,280.49

Finding the Fourth Proportional to 145,486.13, 218,204.35 and 40,280.49

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Solution

The fourth proportional to 145,486.13, 218,204.35 and 40,280.49 is: 60,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,486.13 : 218,204.35 = 40,280.49 : x
  2. Step 2: Convert to fraction form
    145,486.13/218,204.35 = 40,280.49/x
  3. Step 3: Cross multiply
    145,486.13x = 218,204.35 × 40,280.49
  4. Step 4: Simplify right side
    145,486.13x = 8,789,378,037.43
  5. Step 5: Solve for x
    x = 8,789,378,037.43/145,486.13
  6. Step 6: Final answer
    x = 60,413.86

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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.