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Finding the Fourth Proportional to 403,323.90, 604,986.05 and 166,406.19

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Solution

The fourth proportional to 403,323.90, 604,986.05 and 166,406.19 is: 249,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,323.90 : 604,986.05 = 166,406.19 : x
  2. Step 2: Convert to fraction form
    403,323.90/604,986.05 = 166,406.19/x
  3. Step 3: Cross multiply
    403,323.90x = 604,986.05 × 166,406.19
  4. Step 4: Simplify right side
    403,323.90x = 100,673,423,583.65
  5. Step 5: Solve for x
    x = 100,673,423,583.65/403,323.90
  6. Step 6: Final answer
    x = 249,609.37

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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.