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Finding the Fourth Proportional to 310,427.44, 467,715.49 and 280,476.47

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Solution

The fourth proportional to 310,427.44, 467,715.49 and 280,476.47 is: 422,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,427.44 : 467,715.49 = 280,476.47 : x
  2. Step 2: Convert to fraction form
    310,427.44/467,715.49 = 280,476.47/x
  3. Step 3: Cross multiply
    310,427.44x = 467,715.49 × 280,476.47
  4. Step 4: Simplify right side
    310,427.44x = 131,183,190,856.46
  5. Step 5: Solve for x
    x = 131,183,190,856.46/310,427.44
  6. Step 6: Final answer
    x = 422,588.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.