Home / 817,143.20-1,225,715.12-256,221.44

Finding the Fourth Proportional to 817,143.20, 1,225,715.12 and 256,221.44

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Solution

The fourth proportional to 817,143.20, 1,225,715.12 and 256,221.44 is: 384,332.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,143.20 : 1,225,715.12 = 256,221.44 : x
  2. Step 2: Convert to fraction form
    817,143.20/1,225,715.12 = 256,221.44/x
  3. Step 3: Cross multiply
    817,143.20x = 1,225,715.12 × 256,221.44
  4. Step 4: Simplify right side
    817,143.20x = 314,054,493,076.17
  5. Step 5: Solve for x
    x = 314,054,493,076.17/817,143.20
  6. Step 6: Final answer
    x = 384,332.26

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Similar ratio
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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.