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Finding the Fourth Proportional to 309,483.25, 427,065.50 and 171,649.17

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Solution

The fourth proportional to 309,483.25, 427,065.50 and 171,649.17 is: 236,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,483.25 : 427,065.50 = 171,649.17 : x
  2. Step 2: Convert to fraction form
    309,483.25/427,065.50 = 171,649.17/x
  3. Step 3: Cross multiply
    309,483.25x = 427,065.50 × 171,649.17
  4. Step 4: Simplify right side
    309,483.25x = 73,305,438,610.64
  5. Step 5: Solve for x
    x = 73,305,438,610.64/309,483.25
  6. Step 6: Final answer
    x = 236,863.99

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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.