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Finding the Fourth Proportional to 207,810.40, 311,715.60 and 163,573.60

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Solution

The fourth proportional to 207,810.40, 311,715.60 and 163,573.60 is: 245,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,810.40 : 311,715.60 = 163,573.60 : x
  2. Step 2: Convert to fraction form
    207,810.40/311,715.60 = 163,573.60/x
  3. Step 3: Cross multiply
    207,810.40x = 311,715.60 × 163,573.60
  4. Step 4: Simplify right side
    207,810.40x = 50,988,442,868.16
  5. Step 5: Solve for x
    x = 50,988,442,868.16/207,810.40
  6. Step 6: Final answer
    x = 245,360.40

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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.