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Finding the Fourth Proportional to 239,290.50, 330,219.47 and 130,394.64

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Solution

The fourth proportional to 239,290.50, 330,219.47 and 130,394.64 is: 179,943.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,290.50 : 330,219.47 = 130,394.64 : x
  2. Step 2: Convert to fraction form
    239,290.50/330,219.47 = 130,394.64/x
  3. Step 3: Cross multiply
    239,290.50x = 330,219.47 × 130,394.64
  4. Step 4: Simplify right side
    239,290.50x = 43,058,849,237.63
  5. Step 5: Solve for x
    x = 43,058,849,237.63/239,290.50
  6. Step 6: Final answer
    x = 179,943.83

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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.