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Finding the Fourth Proportional to 187,263.90, 280,312.65 and 181,431.90

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Solution

The fourth proportional to 187,263.90, 280,312.65 and 181,431.90 is: 271,582.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,263.90 : 280,312.65 = 181,431.90 : x
  2. Step 2: Convert to fraction form
    187,263.90/280,312.65 = 181,431.90/x
  3. Step 3: Cross multiply
    187,263.90x = 280,312.65 × 181,431.90
  4. Step 4: Simplify right side
    187,263.90x = 50,857,656,683.54
  5. Step 5: Solve for x
    x = 50,857,656,683.54/187,263.90
  6. Step 6: Final answer
    x = 271,582.81

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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.