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Finding the Fourth Proportional to 290,369.12, 400,672.15 and 169,482.68

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Solution

The fourth proportional to 290,369.12, 400,672.15 and 169,482.68 is: 233,864.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,369.12 : 400,672.15 = 169,482.68 : x
  2. Step 2: Convert to fraction form
    290,369.12/400,672.15 = 169,482.68/x
  3. Step 3: Cross multiply
    290,369.12x = 400,672.15 × 169,482.68
  4. Step 4: Simplify right side
    290,369.12x = 67,906,987,356.29
  5. Step 5: Solve for x
    x = 67,906,987,356.29/290,369.12
  6. Step 6: Final answer
    x = 233,864.36

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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.