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Finding the Fourth Proportional to 405,343.42, 608,102.08 and 121,056.38

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Solution

The fourth proportional to 405,343.42, 608,102.08 and 121,056.38 is: 181,610.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,343.42 : 608,102.08 = 121,056.38 : x
  2. Step 2: Convert to fraction form
    405,343.42/608,102.08 = 121,056.38/x
  3. Step 3: Cross multiply
    405,343.42x = 608,102.08 × 121,056.38
  4. Step 4: Simplify right side
    405,343.42x = 73,614,636,475.27
  5. Step 5: Solve for x
    x = 73,614,636,475.27/405,343.42
  6. Step 6: Final answer
    x = 181,610.54

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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.