Home / 287,353.20-396,438.36-174,134.64

Finding the Fourth Proportional to 287,353.20, 396,438.36 and 174,134.64

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Solution

The fourth proportional to 287,353.20, 396,438.36 and 174,134.64 is: 240,239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,353.20 : 396,438.36 = 174,134.64 : x
  2. Step 2: Convert to fraction form
    287,353.20/396,438.36 = 174,134.64/x
  3. Step 3: Cross multiply
    287,353.20x = 396,438.36 × 174,134.64
  4. Step 4: Simplify right side
    287,353.20x = 69,033,651,100.79
  5. Step 5: Solve for x
    x = 69,033,651,100.79/287,353.20
  6. Step 6: Final answer
    x = 240,239.72

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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.