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Finding the Fourth Proportional to 255,711.40, 383,567.10 and 154,234.60

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Solution

The fourth proportional to 255,711.40, 383,567.10 and 154,234.60 is: 231,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,711.40 : 383,567.10 = 154,234.60 : x
  2. Step 2: Convert to fraction form
    255,711.40/383,567.10 = 154,234.60/x
  3. Step 3: Cross multiply
    255,711.40x = 383,567.10 × 154,234.60
  4. Step 4: Simplify right side
    255,711.40x = 59,159,318,241.66
  5. Step 5: Solve for x
    x = 59,159,318,241.66/255,711.40
  6. Step 6: Final answer
    x = 231,351.90

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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.