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Finding the Fourth Proportional to 255,482.64, 383,270.40 and 86,994.90

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Solution

The fourth proportional to 255,482.64, 383,270.40 and 86,994.90 is: 130,508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,482.64 : 383,270.40 = 86,994.90 : x
  2. Step 2: Convert to fraction form
    255,482.64/383,270.40 = 86,994.90/x
  3. Step 3: Cross multiply
    255,482.64x = 383,270.40 × 86,994.90
  4. Step 4: Simplify right side
    255,482.64x = 33,342,570,120.96
  5. Step 5: Solve for x
    x = 33,342,570,120.96/255,482.64
  6. Step 6: Final answer
    x = 130,508.16

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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.