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Finding the Fourth Proportional to 290,599.80, 400,977.18 and 163,280.76

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Solution

The fourth proportional to 290,599.80, 400,977.18 and 163,280.76 is: 225,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,599.80 : 400,977.18 = 163,280.76 : x
  2. Step 2: Convert to fraction form
    290,599.80/400,977.18 = 163,280.76/x
  3. Step 3: Cross multiply
    290,599.80x = 400,977.18 × 163,280.76
  4. Step 4: Simplify right side
    290,599.80x = 65,471,858,693.06
  5. Step 5: Solve for x
    x = 65,471,858,693.06/290,599.80
  6. Step 6: Final answer
    x = 225,299.05

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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.