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Finding the Fourth Proportional to 422,790.76, 583,456.94 and 231,803.70

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Solution

The fourth proportional to 422,790.76, 583,456.94 and 231,803.70 is: 319,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,790.76 : 583,456.94 = 231,803.70 : x
  2. Step 2: Convert to fraction form
    422,790.76/583,456.94 = 231,803.70/x
  3. Step 3: Cross multiply
    422,790.76x = 583,456.94 × 231,803.70
  4. Step 4: Simplify right side
    422,790.76x = 135,247,477,482.68
  5. Step 5: Solve for x
    x = 135,247,477,482.68/422,790.76
  6. Step 6: Final answer
    x = 319,892.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.