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Finding the Fourth Proportional to 280,662.61, 387,204.48 and 173,045.82

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Solution

The fourth proportional to 280,662.61, 387,204.48 and 173,045.82 is: 238,735.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,662.61 : 387,204.48 = 173,045.82 : x
  2. Step 2: Convert to fraction form
    280,662.61/387,204.48 = 173,045.82/x
  3. Step 3: Cross multiply
    280,662.61x = 387,204.48 × 173,045.82
  4. Step 4: Simplify right side
    280,662.61x = 67,004,116,749.27
  5. Step 5: Solve for x
    x = 67,004,116,749.27/280,662.61
  6. Step 6: Final answer
    x = 238,735.46

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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.