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Finding the Fourth Proportional to 207,245.43, 310,868.12 and 57,485.72

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Solution

The fourth proportional to 207,245.43, 310,868.12 and 57,485.72 is: 86,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,245.43 : 310,868.12 = 57,485.72 : x
  2. Step 2: Convert to fraction form
    207,245.43/310,868.12 = 57,485.72/x
  3. Step 3: Cross multiply
    207,245.43x = 310,868.12 × 57,485.72
  4. Step 4: Simplify right side
    207,245.43x = 17,870,478,192.99
  5. Step 5: Solve for x
    x = 17,870,478,192.99/207,245.43
  6. Step 6: Final answer
    x = 86,228.58

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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.