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Finding the Fourth Proportional to 222,712.80, 334,109.70 and 72,911.40

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Solution

The fourth proportional to 222,712.80, 334,109.70 and 72,911.40 is: 109,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,712.80 : 334,109.70 = 72,911.40 : x
  2. Step 2: Convert to fraction form
    222,712.80/334,109.70 = 72,911.40/x
  3. Step 3: Cross multiply
    222,712.80x = 334,109.70 × 72,911.40
  4. Step 4: Simplify right side
    222,712.80x = 24,360,405,980.58
  5. Step 5: Solve for x
    x = 24,360,405,980.58/222,712.80
  6. Step 6: Final answer
    x = 109,380.36

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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.