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Finding the Fourth Proportional to 239,497.48, 330,514.51 and 130,607.78

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Solution

The fourth proportional to 239,497.48, 330,514.51 and 130,607.78 is: 180,243.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,497.48 : 330,514.51 = 130,607.78 : x
  2. Step 2: Convert to fraction form
    239,497.48/330,514.51 = 130,607.78/x
  3. Step 3: Cross multiply
    239,497.48x = 330,514.51 × 130,607.78
  4. Step 4: Simplify right side
    239,497.48x = 43,167,764,103.28
  5. Step 5: Solve for x
    x = 43,167,764,103.28/239,497.48
  6. Step 6: Final answer
    x = 180,243.08

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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.