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Finding the Fourth Proportional to 255,307.50, 383,136.21 and 89,095.50

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Solution

The fourth proportional to 255,307.50, 383,136.21 and 89,095.50 is: 133,704.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,307.50 : 383,136.21 = 89,095.50 : x
  2. Step 2: Convert to fraction form
    255,307.50/383,136.21 = 89,095.50/x
  3. Step 3: Cross multiply
    255,307.50x = 383,136.21 × 89,095.50
  4. Step 4: Simplify right side
    255,307.50x = 34,135,712,198.06
  5. Step 5: Solve for x
    x = 34,135,712,198.06/255,307.50
  6. Step 6: Final answer
    x = 133,704.31

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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.