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Finding the Fourth Proportional to 290,548.36, 400,886.22 and 169,620.40

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Solution

The fourth proportional to 290,548.36, 400,886.22 and 169,620.40 is: 234,034.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,548.36 : 400,886.22 = 169,620.40 : x
  2. Step 2: Convert to fraction form
    290,548.36/400,886.22 = 169,620.40/x
  3. Step 3: Cross multiply
    290,548.36x = 400,886.22 × 169,620.40
  4. Step 4: Simplify right side
    290,548.36x = 67,998,480,990.89
  5. Step 5: Solve for x
    x = 67,998,480,990.89/290,548.36
  6. Step 6: Final answer
    x = 234,034.98

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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.