Home / 287,500.45-396,751.05-160,180.51

Finding the Fourth Proportional to 287,500.45, 396,751.05 and 160,180.51

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Solution

The fourth proportional to 287,500.45, 396,751.05 and 160,180.51 is: 221,049.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,500.45 : 396,751.05 = 160,180.51 : x
  2. Step 2: Convert to fraction form
    287,500.45/396,751.05 = 160,180.51/x
  3. Step 3: Cross multiply
    287,500.45x = 396,751.05 × 160,180.51
  4. Step 4: Simplify right side
    287,500.45x = 63,551,785,532.04
  5. Step 5: Solve for x
    x = 63,551,785,532.04/287,500.45
  6. Step 6: Final answer
    x = 221,049.34

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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.