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Finding the Fourth Proportional to 239,782.91, 330,908.46 and 130,893.71

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Solution

The fourth proportional to 239,782.91, 330,908.46 and 130,893.71 is: 180,637.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,782.91 : 330,908.46 = 130,893.71 : x
  2. Step 2: Convert to fraction form
    239,782.91/330,908.46 = 130,893.71/x
  3. Step 3: Cross multiply
    239,782.91x = 330,908.46 × 130,893.71
  4. Step 4: Simplify right side
    239,782.91x = 43,313,835,999.79
  5. Step 5: Solve for x
    x = 43,313,835,999.79/239,782.91
  6. Step 6: Final answer
    x = 180,637.71

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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.