Home / 287,114.08-396,213.52-159,789.67

Finding the Fourth Proportional to 287,114.08, 396,213.52 and 159,789.67

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Solution

The fourth proportional to 287,114.08, 396,213.52 and 159,789.67 is: 220,507.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,114.08 : 396,213.52 = 159,789.67 : x
  2. Step 2: Convert to fraction form
    287,114.08/396,213.52 = 159,789.67/x
  3. Step 3: Cross multiply
    287,114.08x = 396,213.52 × 159,789.67
  4. Step 4: Simplify right side
    287,114.08x = 63,310,827,610.34
  5. Step 5: Solve for x
    x = 63,310,827,610.34/287,114.08
  6. Step 6: Final answer
    x = 220,507.57

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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.