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Finding the Fourth Proportional to 287,429.76, 396,334.08 and 235,589.76

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Solution

The fourth proportional to 287,429.76, 396,334.08 and 235,589.76 is: 324,852.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,429.76 : 396,334.08 = 235,589.76 : x
  2. Step 2: Convert to fraction form
    287,429.76/396,334.08 = 235,589.76/x
  3. Step 3: Cross multiply
    287,429.76x = 396,334.08 × 235,589.76
  4. Step 4: Simplify right side
    287,429.76x = 93,372,250,787.02
  5. Step 5: Solve for x
    x = 93,372,250,787.02/287,429.76
  6. Step 6: Final answer
    x = 324,852.41

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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.