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Finding the Fourth Proportional to 309,232.40, 426,734.52 and 173,264.72

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Solution

The fourth proportional to 309,232.40, 426,734.52 and 173,264.72 is: 239,101.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,232.40 : 426,734.52 = 173,264.72 : x
  2. Step 2: Convert to fraction form
    309,232.40/426,734.52 = 173,264.72/x
  3. Step 3: Cross multiply
    309,232.40x = 426,734.52 × 173,264.72
  4. Step 4: Simplify right side
    309,232.40x = 73,938,037,122.13
  5. Step 5: Solve for x
    x = 73,938,037,122.13/309,232.40
  6. Step 6: Final answer
    x = 239,101.84

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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.