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Finding the Fourth Proportional to 290,891.53, 401,364.93 and 168,364.90

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Solution

The fourth proportional to 290,891.53, 401,364.93 and 168,364.90 is: 232,305.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,891.53 : 401,364.93 = 168,364.90 : x
  2. Step 2: Convert to fraction form
    290,891.53/401,364.93 = 168,364.90/x
  3. Step 3: Cross multiply
    290,891.53x = 401,364.93 × 168,364.90
  4. Step 4: Simplify right side
    290,891.53x = 67,575,766,302.96
  5. Step 5: Solve for x
    x = 67,575,766,302.96/290,891.53
  6. Step 6: Final answer
    x = 232,305.72

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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.