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Finding the Fourth Proportional to 434,690.08, 651,908.72 and 168,391.20

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Solution

The fourth proportional to 434,690.08, 651,908.72 and 168,391.20 is: 252,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,690.08 : 651,908.72 = 168,391.20 : x
  2. Step 2: Convert to fraction form
    434,690.08/651,908.72 = 168,391.20/x
  3. Step 3: Cross multiply
    434,690.08x = 651,908.72 × 168,391.20
  4. Step 4: Simplify right side
    434,690.08x = 109,775,691,651.26
  5. Step 5: Solve for x
    x = 109,775,691,651.26/434,690.08
  6. Step 6: Final answer
    x = 252,537.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.