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Finding the Fourth Proportional to 319,025.60, 479,251.20 and 266,537.60

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Solution

The fourth proportional to 319,025.60, 479,251.20 and 266,537.60 is: 400,401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,025.60 : 479,251.20 = 266,537.60 : x
  2. Step 2: Convert to fraction form
    319,025.60/479,251.20 = 266,537.60/x
  3. Step 3: Cross multiply
    319,025.60x = 479,251.20 × 266,537.60
  4. Step 4: Simplify right side
    319,025.60x = 127,738,464,645.12
  5. Step 5: Solve for x
    x = 127,738,464,645.12/319,025.60
  6. Step 6: Final answer
    x = 400,401.93

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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.