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Finding the Fourth Proportional to 255,936.40, 383,904.60 and 89,724.40

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Solution

The fourth proportional to 255,936.40, 383,904.60 and 89,724.40 is: 134,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,936.40 : 383,904.60 = 89,724.40 : x
  2. Step 2: Convert to fraction form
    255,936.40/383,904.60 = 89,724.40/x
  3. Step 3: Cross multiply
    255,936.40x = 383,904.60 × 89,724.40
  4. Step 4: Simplify right side
    255,936.40x = 34,445,609,892.24
  5. Step 5: Solve for x
    x = 34,445,609,892.24/255,936.40
  6. Step 6: Final answer
    x = 134,586.60

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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.