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Finding the Fourth Proportional to 400,433.81, 600,643.62 and 100,907.69

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Solution

The fourth proportional to 400,433.81, 600,643.62 and 100,907.69 is: 151,359.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,433.81 : 600,643.62 = 100,907.69 : x
  2. Step 2: Convert to fraction form
    400,433.81/600,643.62 = 100,907.69/x
  3. Step 3: Cross multiply
    400,433.81x = 600,643.62 × 100,907.69
  4. Step 4: Simplify right side
    400,433.81x = 60,609,557,204.22
  5. Step 5: Solve for x
    x = 60,609,557,204.22/400,433.81
  6. Step 6: Final answer
    x = 151,359.74

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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.