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Finding the Fourth Proportional to 251,059.32, 378,315.96 and 207,662.76

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Solution

The fourth proportional to 251,059.32, 378,315.96 and 207,662.76 is: 312,922.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,059.32 : 378,315.96 = 207,662.76 : x
  2. Step 2: Convert to fraction form
    251,059.32/378,315.96 = 207,662.76/x
  3. Step 3: Cross multiply
    251,059.32x = 378,315.96 × 207,662.76
  4. Step 4: Simplify right side
    251,059.32x = 78,562,136,405.65
  5. Step 5: Solve for x
    x = 78,562,136,405.65/251,059.32
  6. Step 6: Final answer
    x = 312,922.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.