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Finding the Fourth Proportional to 290,574.66, 400,974.66 and 169,750.20

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Solution

The fourth proportional to 290,574.66, 400,974.66 and 169,750.20 is: 234,244.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,574.66 : 400,974.66 = 169,750.20 : x
  2. Step 2: Convert to fraction form
    290,574.66/400,974.66 = 169,750.20/x
  3. Step 3: Cross multiply
    290,574.66x = 400,974.66 × 169,750.20
  4. Step 4: Simplify right side
    290,574.66x = 68,065,528,729.93
  5. Step 5: Solve for x
    x = 68,065,528,729.93/290,574.66
  6. Step 6: Final answer
    x = 234,244.54

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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.