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Finding the Fourth Proportional to 207,028.80, 310,586.40 and 66,801.60

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Solution

The fourth proportional to 207,028.80, 310,586.40 and 66,801.60 is: 100,216.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,028.80 : 310,586.40 = 66,801.60 : x
  2. Step 2: Convert to fraction form
    207,028.80/310,586.40 = 66,801.60/x
  3. Step 3: Cross multiply
    207,028.80x = 310,586.40 × 66,801.60
  4. Step 4: Simplify right side
    207,028.80x = 20,747,668,458.24
  5. Step 5: Solve for x
    x = 20,747,668,458.24/207,028.80
  6. Step 6: Final answer
    x = 100,216.34

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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.