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Finding the Fourth Proportional to 317,263.50, 475,908.21 and 80,612.28

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Solution

The fourth proportional to 317,263.50, 475,908.21 and 80,612.28 is: 120,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,263.50 : 475,908.21 = 80,612.28 : x
  2. Step 2: Convert to fraction form
    317,263.50/475,908.21 = 80,612.28/x
  3. Step 3: Cross multiply
    317,263.50x = 475,908.21 × 80,612.28
  4. Step 4: Simplify right side
    317,263.50x = 38,364,045,878.82
  5. Step 5: Solve for x
    x = 38,364,045,878.82/317,263.50
  6. Step 6: Final answer
    x = 120,921.71

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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.