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Finding the Fourth Proportional to 404,636.80, 607,611.30 and 272,104.60

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Solution

The fourth proportional to 404,636.80, 607,611.30 and 272,104.60 is: 408,598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,636.80 : 607,611.30 = 272,104.60 : x
  2. Step 2: Convert to fraction form
    404,636.80/607,611.30 = 272,104.60/x
  3. Step 3: Cross multiply
    404,636.80x = 607,611.30 × 272,104.60
  4. Step 4: Simplify right side
    404,636.80x = 165,333,829,741.98
  5. Step 5: Solve for x
    x = 165,333,829,741.98/404,636.80
  6. Step 6: Final answer
    x = 408,598.11

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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.