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Finding the Fourth Proportional to 207,095, 310,642.56 and 66,874.28

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Solution

The fourth proportional to 207,095, 310,642.56 and 66,874.28 is: 100,311.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,095 : 310,642.56 = 66,874.28 : x
  2. Step 2: Convert to fraction form
    207,095/310,642.56 = 66,874.28/x
  3. Step 3: Cross multiply
    207,095x = 310,642.56 × 66,874.28
  4. Step 4: Simplify right side
    207,095x = 20,773,997,537.36
  5. Step 5: Solve for x
    x = 20,773,997,537.36/207,095
  6. Step 6: Final answer
    x = 100,311.44

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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.