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Finding the Fourth Proportional to 426,705.98, 640,095.62 and 111,162.38

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Solution

The fourth proportional to 426,705.98, 640,095.62 and 111,162.38 is: 166,753.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,705.98 : 640,095.62 = 111,162.38 : x
  2. Step 2: Convert to fraction form
    426,705.98/640,095.62 = 111,162.38/x
  3. Step 3: Cross multiply
    426,705.98x = 640,095.62 × 111,162.38
  4. Step 4: Simplify right side
    426,705.98x = 71,154,548,790.49
  5. Step 5: Solve for x
    x = 71,154,548,790.49/426,705.98
  6. Step 6: Final answer
    x = 166,753.11

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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.