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Finding the Fourth Proportional to 207,079.75, 310,626.51 and 57,307.51

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Solution

The fourth proportional to 207,079.75, 310,626.51 and 57,307.51 is: 85,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,079.75 : 310,626.51 = 57,307.51 : x
  2. Step 2: Convert to fraction form
    207,079.75/310,626.51 = 57,307.51/x
  3. Step 3: Cross multiply
    207,079.75x = 310,626.51 × 57,307.51
  4. Step 4: Simplify right side
    207,079.75x = 17,801,231,828.09
  5. Step 5: Solve for x
    x = 17,801,231,828.09/207,079.75
  6. Step 6: Final answer
    x = 85,963.17

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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.