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Finding the Fourth Proportional to 247,416.82, 370,943.64 and 78,840.16

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Solution

The fourth proportional to 247,416.82, 370,943.64 and 78,840.16 is: 118,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,416.82 : 370,943.64 = 78,840.16 : x
  2. Step 2: Convert to fraction form
    247,416.82/370,943.64 = 78,840.16/x
  3. Step 3: Cross multiply
    247,416.82x = 370,943.64 × 78,840.16
  4. Step 4: Simplify right side
    247,416.82x = 29,245,255,928.58
  5. Step 5: Solve for x
    x = 29,245,255,928.58/247,416.82
  6. Step 6: Final answer
    x = 118,202.38

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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.