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Finding the Fourth Proportional to 543,355.81, 814,995.24 and 143,987.74

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Solution

The fourth proportional to 543,355.81, 814,995.24 and 143,987.74 is: 215,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,355.81 : 814,995.24 = 143,987.74 : x
  2. Step 2: Convert to fraction form
    543,355.81/814,995.24 = 143,987.74/x
  3. Step 3: Cross multiply
    543,355.81x = 814,995.24 × 143,987.74
  4. Step 4: Simplify right side
    543,355.81x = 117,349,322,718.36
  5. Step 5: Solve for x
    x = 117,349,322,718.36/543,355.81
  6. Step 6: Final answer
    x = 215,971.41

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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.