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Finding the Fourth Proportional to 423,995.52, 635,598 and 143,317.68

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Solution

The fourth proportional to 423,995.52, 635,598 and 143,317.68 is: 214,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,995.52 : 635,598 = 143,317.68 : x
  2. Step 2: Convert to fraction form
    423,995.52/635,598 = 143,317.68/x
  3. Step 3: Cross multiply
    423,995.52x = 635,598 × 143,317.68
  4. Step 4: Simplify right side
    423,995.52x = 91,092,430,772.64
  5. Step 5: Solve for x
    x = 91,092,430,772.64/423,995.52
  6. Step 6: Final answer
    x = 214,842.91

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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.