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Finding the Fourth Proportional to 319,622.70, 479,101.95 and 130,001.70

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Solution

The fourth proportional to 319,622.70, 479,101.95 and 130,001.70 is: 194,867.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,622.70 : 479,101.95 = 130,001.70 : x
  2. Step 2: Convert to fraction form
    319,622.70/479,101.95 = 130,001.70/x
  3. Step 3: Cross multiply
    319,622.70x = 479,101.95 × 130,001.70
  4. Step 4: Simplify right side
    319,622.70x = 62,284,067,973.32
  5. Step 5: Solve for x
    x = 62,284,067,973.32/319,622.70
  6. Step 6: Final answer
    x = 194,867.47

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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.