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Finding the Fourth Proportional to 239,455.95, 330,451.80 and 130,559.39

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Solution

The fourth proportional to 239,455.95, 330,451.80 and 130,559.39 is: 180,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,455.95 : 330,451.80 = 130,559.39 : x
  2. Step 2: Convert to fraction form
    239,455.95/330,451.80 = 130,559.39/x
  3. Step 3: Cross multiply
    239,455.95x = 330,451.80 × 130,559.39
  4. Step 4: Simplify right side
    239,455.95x = 43,143,587,122.93
  5. Step 5: Solve for x
    x = 43,143,587,122.93/239,455.95
  6. Step 6: Final answer
    x = 180,173.37

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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.