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Finding the Fourth Proportional to 255,145.87, 382,482.15 and 112,915.54

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Solution

The fourth proportional to 255,145.87, 382,482.15 and 112,915.54 is: 169,268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,145.87 : 382,482.15 = 112,915.54 : x
  2. Step 2: Convert to fraction form
    255,145.87/382,482.15 = 112,915.54/x
  3. Step 3: Cross multiply
    255,145.87x = 382,482.15 × 112,915.54
  4. Step 4: Simplify right side
    255,145.87x = 43,188,178,507.61
  5. Step 5: Solve for x
    x = 43,188,178,507.61/255,145.87
  6. Step 6: Final answer
    x = 169,268.58

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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.