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Finding the Fourth Proportional to 290,017.76, 400,134.82 and 169,073.44

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Solution

The fourth proportional to 290,017.76, 400,134.82 and 169,073.44 is: 233,269.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,017.76 : 400,134.82 = 169,073.44 : x
  2. Step 2: Convert to fraction form
    290,017.76/400,134.82 = 169,073.44/x
  3. Step 3: Cross multiply
    290,017.76x = 400,134.82 × 169,073.44
  4. Step 4: Simplify right side
    290,017.76x = 67,652,167,635.14
  5. Step 5: Solve for x
    x = 67,652,167,635.14/290,017.76
  6. Step 6: Final answer
    x = 233,269.05

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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.