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Finding the Fourth Proportional to 319,937.66, 479,857.17 and 106,709.30

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Solution

The fourth proportional to 319,937.66, 479,857.17 and 106,709.30 is: 160,047.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,937.66 : 479,857.17 = 106,709.30 : x
  2. Step 2: Convert to fraction form
    319,937.66/479,857.17 = 106,709.30/x
  3. Step 3: Cross multiply
    319,937.66x = 479,857.17 × 106,709.30
  4. Step 4: Simplify right side
    319,937.66x = 51,205,222,710.68
  5. Step 5: Solve for x
    x = 51,205,222,710.68/319,937.66
  6. Step 6: Final answer
    x = 160,047.50

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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.