Home / 287,112.08-396,210.77-159,787.67

Finding the Fourth Proportional to 287,112.08, 396,210.77 and 159,787.67

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Solution

The fourth proportional to 287,112.08, 396,210.77 and 159,787.67 is: 220,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,112.08 : 396,210.77 = 159,787.67 : x
  2. Step 2: Convert to fraction form
    287,112.08/396,210.77 = 159,787.67/x
  3. Step 3: Cross multiply
    287,112.08x = 396,210.77 × 159,787.67
  4. Step 4: Simplify right side
    287,112.08x = 63,309,592,987.21
  5. Step 5: Solve for x
    x = 63,309,592,987.21/287,112.08
  6. Step 6: Final answer
    x = 220,504.81

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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.