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Finding the Fourth Proportional to 611,275.70, 916,913.55 and 256,171.70

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Solution

The fourth proportional to 611,275.70, 916,913.55 and 256,171.70 is: 384,257.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,275.70 : 916,913.55 = 256,171.70 : x
  2. Step 2: Convert to fraction form
    611,275.70/916,913.55 = 256,171.70/x
  3. Step 3: Cross multiply
    611,275.70x = 916,913.55 × 256,171.70
  4. Step 4: Simplify right side
    611,275.70x = 234,887,302,856.54
  5. Step 5: Solve for x
    x = 234,887,302,856.54/611,275.70
  6. Step 6: Final answer
    x = 384,257.55

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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.