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Finding the Fourth Proportional to 309,735.76, 427,409.48 and 173,750.80

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Solution

The fourth proportional to 309,735.76, 427,409.48 and 173,750.80 is: 239,761.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,735.76 : 427,409.48 = 173,750.80 : x
  2. Step 2: Convert to fraction form
    309,735.76/427,409.48 = 173,750.80/x
  3. Step 3: Cross multiply
    309,735.76x = 427,409.48 × 173,750.80
  4. Step 4: Simplify right side
    309,735.76x = 74,262,739,077.58
  5. Step 5: Solve for x
    x = 74,262,739,077.58/309,735.76
  6. Step 6: Final answer
    x = 239,761.59

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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.