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Finding the Fourth Proportional to 322,401.05, 484,117.95 and 256,390.10

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Solution

The fourth proportional to 322,401.05, 484,117.95 and 256,390.10 is: 384,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,401.05 : 484,117.95 = 256,390.10 : x
  2. Step 2: Convert to fraction form
    322,401.05/484,117.95 = 256,390.10/x
  3. Step 3: Cross multiply
    322,401.05x = 484,117.95 × 256,390.10
  4. Step 4: Simplify right side
    322,401.05x = 124,123,049,612.30
  5. Step 5: Solve for x
    x = 124,123,049,612.30/322,401.05
  6. Step 6: Final answer
    x = 384,995.80

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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.