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Finding the Fourth Proportional to 290,502.80, 400,881.24 and 169,650.80

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Solution

The fourth proportional to 290,502.80, 400,881.24 and 169,650.80 is: 234,110.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,502.80 : 400,881.24 = 169,650.80 : x
  2. Step 2: Convert to fraction form
    290,502.80/400,881.24 = 169,650.80/x
  3. Step 3: Cross multiply
    290,502.80x = 400,881.24 × 169,650.80
  4. Step 4: Simplify right side
    290,502.80x = 68,009,823,070.99
  5. Step 5: Solve for x
    x = 68,009,823,070.99/290,502.80
  6. Step 6: Final answer
    x = 234,110.73

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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.