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Finding the Fourth Proportional to 255,805.60, 383,881.20 and 166,842.40

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Solution

The fourth proportional to 255,805.60, 383,881.20 and 166,842.40 is: 250,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,805.60 : 383,881.20 = 166,842.40 : x
  2. Step 2: Convert to fraction form
    255,805.60/383,881.20 = 166,842.40/x
  3. Step 3: Cross multiply
    255,805.60x = 383,881.20 × 166,842.40
  4. Step 4: Simplify right side
    255,805.60x = 64,047,660,722.88
  5. Step 5: Solve for x
    x = 64,047,660,722.88/255,805.60
  6. Step 6: Final answer
    x = 250,376.30

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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.