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Finding the Fourth Proportional to 247,309.98, 370,994.40 and 78,771.12

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Solution

The fourth proportional to 247,309.98, 370,994.40 and 78,771.12 is: 118,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,309.98 : 370,994.40 = 78,771.12 : x
  2. Step 2: Convert to fraction form
    247,309.98/370,994.40 = 78,771.12/x
  3. Step 3: Cross multiply
    247,309.98x = 370,994.40 × 78,771.12
  4. Step 4: Simplify right side
    247,309.98x = 29,223,644,401.73
  5. Step 5: Solve for x
    x = 29,223,644,401.73/247,309.98
  6. Step 6: Final answer
    x = 118,166.05

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1.5x scale

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.