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Finding the Fourth Proportional to 290,199.80, 400,425.18 and 162,880.76

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Solution

The fourth proportional to 290,199.80, 400,425.18 and 162,880.76 is: 224,747.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,199.80 : 400,425.18 = 162,880.76 : x
  2. Step 2: Convert to fraction form
    290,199.80/400,425.18 = 162,880.76/x
  3. Step 3: Cross multiply
    290,199.80x = 400,425.18 × 162,880.76
  4. Step 4: Simplify right side
    290,199.80x = 65,221,557,641.54
  5. Step 5: Solve for x
    x = 65,221,557,641.54/290,199.80
  6. Step 6: Final answer
    x = 224,747.08

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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.