Home / 319,439.52-479,127.39-129,911.07

Finding the Fourth Proportional to 319,439.52, 479,127.39 and 129,911.07

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Solution

The fourth proportional to 319,439.52, 479,127.39 and 129,911.07 is: 194,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,439.52 : 479,127.39 = 129,911.07 : x
  2. Step 2: Convert to fraction form
    319,439.52/479,127.39 = 129,911.07/x
  3. Step 3: Cross multiply
    319,439.52x = 479,127.39 × 129,911.07
  4. Step 4: Simplify right side
    319,439.52x = 62,243,951,901.21
  5. Step 5: Solve for x
    x = 62,243,951,901.21/319,439.52
  6. Step 6: Final answer
    x = 194,853.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.