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Finding the Fourth Proportional to 255,437.55, 383,202.90 and 86,949.86

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Solution

The fourth proportional to 255,437.55, 383,202.90 and 86,949.86 is: 130,440.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,437.55 : 383,202.90 = 86,949.86 : x
  2. Step 2: Convert to fraction form
    255,437.55/383,202.90 = 86,949.86/x
  3. Step 3: Cross multiply
    255,437.55x = 383,202.90 × 86,949.86
  4. Step 4: Simplify right side
    255,437.55x = 33,319,436,590.58
  5. Step 5: Solve for x
    x = 33,319,436,590.58/255,437.55
  6. Step 6: Final answer
    x = 130,440.64

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1.5x scale

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.