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Finding the Fourth Proportional to 207,395.19, 311,258.88 and 95,128.29

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Solution

The fourth proportional to 207,395.19, 311,258.88 and 95,128.29 is: 142,768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,395.19 : 311,258.88 = 95,128.29 : x
  2. Step 2: Convert to fraction form
    207,395.19/311,258.88 = 95,128.29/x
  3. Step 3: Cross multiply
    207,395.19x = 311,258.88 × 95,128.29
  4. Step 4: Simplify right side
    207,395.19x = 29,609,525,001.72
  5. Step 5: Solve for x
    x = 29,609,525,001.72/207,395.19
  6. Step 6: Final answer
    x = 142,768.62

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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.