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Finding the Fourth Proportional to 312,880.16, 469,112.86 and 113,174.24

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Solution

The fourth proportional to 312,880.16, 469,112.86 and 113,174.24 is: 169,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,880.16 : 469,112.86 = 113,174.24 : x
  2. Step 2: Convert to fraction form
    312,880.16/469,112.86 = 113,174.24/x
  3. Step 3: Cross multiply
    312,880.16x = 469,112.86 × 113,174.24
  4. Step 4: Simplify right side
    312,880.16x = 53,091,491,404.73
  5. Step 5: Solve for x
    x = 53,091,491,404.73/312,880.16
  6. Step 6: Final answer
    x = 169,686.35

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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.