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Finding the Fourth Proportional to 255,522.34, 383,307.18 and 86,986.03

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Solution

The fourth proportional to 255,522.34, 383,307.18 and 86,986.03 is: 130,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,522.34 : 383,307.18 = 86,986.03 : x
  2. Step 2: Convert to fraction form
    255,522.34/383,307.18 = 86,986.03/x
  3. Step 3: Cross multiply
    255,522.34x = 383,307.18 × 86,986.03
  4. Step 4: Simplify right side
    255,522.34x = 33,342,369,858.70
  5. Step 5: Solve for x
    x = 33,342,369,858.70/255,522.34
  6. Step 6: Final answer
    x = 130,487.10

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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.