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Finding the Fourth Proportional to 479,603.52, 719,404.80 and 142,642.80

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Solution

The fourth proportional to 479,603.52, 719,404.80 and 142,642.80 is: 213,964.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,603.52 : 719,404.80 = 142,642.80 : x
  2. Step 2: Convert to fraction form
    479,603.52/719,404.80 = 142,642.80/x
  3. Step 3: Cross multiply
    479,603.52x = 719,404.80 × 142,642.80
  4. Step 4: Simplify right side
    479,603.52x = 102,617,915,005.44
  5. Step 5: Solve for x
    x = 102,617,915,005.44/479,603.52
  6. Step 6: Final answer
    x = 213,964.06

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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.