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Finding the Fourth Proportional to 207,918.01, 311,915.49 and 65,799.06

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Solution

The fourth proportional to 207,918.01, 311,915.49 and 65,799.06 is: 98,710.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,918.01 : 311,915.49 = 65,799.06 : x
  2. Step 2: Convert to fraction form
    207,918.01/311,915.49 = 65,799.06/x
  3. Step 3: Cross multiply
    207,918.01x = 311,915.49 × 65,799.06
  4. Step 4: Simplify right side
    207,918.01x = 20,523,746,041.44
  5. Step 5: Solve for x
    x = 20,523,746,041.44/207,918.01
  6. Step 6: Final answer
    x = 98,710.77

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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.