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Finding the Fourth Proportional to 239,448.78, 330,429.06 and 130,550.76

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Solution

The fourth proportional to 239,448.78, 330,429.06 and 130,550.76 is: 180,154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,448.78 : 330,429.06 = 130,550.76 : x
  2. Step 2: Convert to fraction form
    239,448.78/330,429.06 = 130,550.76/x
  3. Step 3: Cross multiply
    239,448.78x = 330,429.06 × 130,550.76
  4. Step 4: Simplify right side
    239,448.78x = 43,137,764,909.09
  5. Step 5: Solve for x
    x = 43,137,764,909.09/239,448.78
  6. Step 6: Final answer
    x = 180,154.46

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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.