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Finding the Fourth Proportional to 269,136,802.40, 403,705,203.60 and 221,307,112.40

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Solution

The fourth proportional to 269,136,802.40, 403,705,203.60 and 221,307,112.40 is: 331,960,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,136,802.40 : 403,705,203.60 = 221,307,112.40 : x
  2. Step 2: Convert to fraction form
    269,136,802.40/403,705,203.60 = 221,307,112.40/x
  3. Step 3: Cross multiply
    269,136,802.40x = 403,705,203.60 × 221,307,112.40
  4. Step 4: Simplify right side
    269,136,802.40x = 89,342,832,869,570,096
  5. Step 5: Solve for x
    x = 89,342,832,869,570,096/269,136,802.40
  6. Step 6: Final answer
    x = 331,960,668.60

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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.