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Finding the Fourth Proportional to 404,841.40, 606,290.10 and 217,439.80

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Solution

The fourth proportional to 404,841.40, 606,290.10 and 217,439.80 is: 325,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,841.40 : 606,290.10 = 217,439.80 : x
  2. Step 2: Convert to fraction form
    404,841.40/606,290.10 = 217,439.80/x
  3. Step 3: Cross multiply
    404,841.40x = 606,290.10 × 217,439.80
  4. Step 4: Simplify right side
    404,841.40x = 131,831,598,085.98
  5. Step 5: Solve for x
    x = 131,831,598,085.98/404,841.40
  6. Step 6: Final answer
    x = 325,637.64

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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.