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Finding the Fourth Proportional to 247,333.80, 370,877.84 and 78,832.20

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Solution

The fourth proportional to 247,333.80, 370,877.84 and 78,832.20 is: 118,209.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,333.80 : 370,877.84 = 78,832.20 : x
  2. Step 2: Convert to fraction form
    247,333.80/370,877.84 = 78,832.20/x
  3. Step 3: Cross multiply
    247,333.80x = 370,877.84 × 78,832.20
  4. Step 4: Simplify right side
    247,333.80x = 29,237,116,058.45
  5. Step 5: Solve for x
    x = 29,237,116,058.45/247,333.80
  6. Step 6: Final answer
    x = 118,209.14

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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.