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Finding the Fourth Proportional to 239,388.35, 330,355.77 and 130,492.90

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Solution

The fourth proportional to 239,388.35, 330,355.77 and 130,492.90 is: 180,080.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,388.35 : 330,355.77 = 130,492.90 : x
  2. Step 2: Convert to fraction form
    239,388.35/330,355.77 = 130,492.90/x
  3. Step 3: Cross multiply
    239,388.35x = 330,355.77 × 130,492.90
  4. Step 4: Simplify right side
    239,388.35x = 43,109,080,891.39
  5. Step 5: Solve for x
    x = 43,109,080,891.39/239,388.35
  6. Step 6: Final answer
    x = 180,080.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.