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Finding the Fourth Proportional to 290,314.30, 400,620.37 and 161,260.96

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Solution

The fourth proportional to 290,314.30, 400,620.37 and 161,260.96 is: 222,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,314.30 : 400,620.37 = 161,260.96 : x
  2. Step 2: Convert to fraction form
    290,314.30/400,620.37 = 161,260.96/x
  3. Step 3: Cross multiply
    290,314.30x = 400,620.37 × 161,260.96
  4. Step 4: Simplify right side
    290,314.30x = 64,604,425,461.76
  5. Step 5: Solve for x
    x = 64,604,425,461.76/290,314.30
  6. Step 6: Final answer
    x = 222,532.70

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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.