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Finding the Fourth Proportional to 290,319.88, 400,673.62 and 169,490.86

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Solution

The fourth proportional to 290,319.88, 400,673.62 and 169,490.86 is: 233,916.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,319.88 : 400,673.62 = 169,490.86 : x
  2. Step 2: Convert to fraction form
    290,319.88/400,673.62 = 169,490.86/x
  3. Step 3: Cross multiply
    290,319.88x = 400,673.62 × 169,490.86
  4. Step 4: Simplify right side
    290,319.88x = 67,910,516,433.11
  5. Step 5: Solve for x
    x = 67,910,516,433.11/290,319.88
  6. Step 6: Final answer
    x = 233,916.18

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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.