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Finding the Fourth Proportional to 247,031.01, 340,863.93 and 143,688.06

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Solution

The fourth proportional to 247,031.01, 340,863.93 and 143,688.06 is: 198,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,031.01 : 340,863.93 = 143,688.06 : x
  2. Step 2: Convert to fraction form
    247,031.01/340,863.93 = 143,688.06/x
  3. Step 3: Cross multiply
    247,031.01x = 340,863.93 × 143,688.06
  4. Step 4: Simplify right side
    247,031.01x = 48,978,076,825.68
  5. Step 5: Solve for x
    x = 48,978,076,825.68/247,031.01
  6. Step 6: Final answer
    x = 198,266.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.