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Finding the Fourth Proportional to 290,785.98, 401,225.28 and 169,903.91

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Solution

The fourth proportional to 290,785.98, 401,225.28 and 169,903.91 is: 234,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,785.98 : 401,225.28 = 169,903.91 : x
  2. Step 2: Convert to fraction form
    290,785.98/401,225.28 = 169,903.91/x
  3. Step 3: Cross multiply
    290,785.98x = 401,225.28 × 169,903.91
  4. Step 4: Simplify right side
    290,785.98x = 68,169,743,862.84
  5. Step 5: Solve for x
    x = 68,169,743,862.84/290,785.98
  6. Step 6: Final answer
    x = 234,432.70

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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.