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Finding the Fourth Proportional to 405,505.61, 608,120.01 and 165,582.14

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Solution

The fourth proportional to 405,505.61, 608,120.01 and 165,582.14 is: 248,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,505.61 : 608,120.01 = 165,582.14 : x
  2. Step 2: Convert to fraction form
    405,505.61/608,120.01 = 165,582.14/x
  3. Step 3: Cross multiply
    405,505.61x = 608,120.01 × 165,582.14
  4. Step 4: Simplify right side
    405,505.61x = 100,693,812,632.62
  5. Step 5: Solve for x
    x = 100,693,812,632.62/405,505.61
  6. Step 6: Final answer
    x = 248,316.69

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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.