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Finding the Fourth Proportional to 255,319.72, 383,154.54 and 89,107.72

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Solution

The fourth proportional to 255,319.72, 383,154.54 and 89,107.72 is: 133,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,319.72 : 383,154.54 = 89,107.72 : x
  2. Step 2: Convert to fraction form
    255,319.72/383,154.54 = 89,107.72/x
  3. Step 3: Cross multiply
    255,319.72x = 383,154.54 × 89,107.72
  4. Step 4: Simplify right side
    255,319.72x = 34,142,027,467.05
  5. Step 5: Solve for x
    x = 34,142,027,467.05/255,319.72
  6. Step 6: Final answer
    x = 133,722.64

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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.