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Finding the Fourth Proportional to 239,290.63, 330,219.65 and 130,394.77

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Solution

The fourth proportional to 239,290.63, 330,219.65 and 130,394.77 is: 179,944.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,290.63 : 330,219.65 = 130,394.77 : x
  2. Step 2: Convert to fraction form
    239,290.63/330,219.65 = 130,394.77/x
  3. Step 3: Cross multiply
    239,290.63x = 330,219.65 × 130,394.77
  4. Step 4: Simplify right side
    239,290.63x = 43,058,913,008.16
  5. Step 5: Solve for x
    x = 43,058,913,008.16/239,290.63
  6. Step 6: Final answer
    x = 179,944.00

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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.