Home / 215,830.70-323,746.05-171,215.90

Finding the Fourth Proportional to 215,830.70, 323,746.05 and 171,215.90

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Solution

The fourth proportional to 215,830.70, 323,746.05 and 171,215.90 is: 256,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,830.70 : 323,746.05 = 171,215.90 : x
  2. Step 2: Convert to fraction form
    215,830.70/323,746.05 = 171,215.90/x
  3. Step 3: Cross multiply
    215,830.70x = 323,746.05 × 171,215.90
  4. Step 4: Simplify right side
    215,830.70x = 55,430,471,322.20
  5. Step 5: Solve for x
    x = 55,430,471,322.20/215,830.70
  6. Step 6: Final answer
    x = 256,823.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.