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Finding the Fourth Proportional to 280,243.99, 386,745.25 and 159,402.69

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Solution

The fourth proportional to 280,243.99, 386,745.25 and 159,402.69 is: 219,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,243.99 : 386,745.25 = 159,402.69 : x
  2. Step 2: Convert to fraction form
    280,243.99/386,745.25 = 159,402.69/x
  3. Step 3: Cross multiply
    280,243.99x = 386,745.25 × 159,402.69
  4. Step 4: Simplify right side
    280,243.99x = 61,648,233,194.72
  5. Step 5: Solve for x
    x = 61,648,233,194.72/280,243.99
  6. Step 6: Final answer
    x = 219,980.57

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1.5x scale

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.