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Finding the Fourth Proportional to 290,365.74, 400,667.49 and 169,479.30

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Solution

The fourth proportional to 290,365.74, 400,667.49 and 169,479.30 is: 233,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,365.74 : 400,667.49 = 169,479.30 : x
  2. Step 2: Convert to fraction form
    290,365.74/400,667.49 = 169,479.30/x
  3. Step 3: Cross multiply
    290,365.74x = 400,667.49 × 169,479.30
  4. Step 4: Simplify right side
    290,365.74x = 67,904,845,737.96
  5. Step 5: Solve for x
    x = 67,904,845,737.96/290,365.74
  6. Step 6: Final answer
    x = 233,859.70

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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.