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Finding the Fourth Proportional to 207,280.64, 310,920.36 and 65,136.44

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Solution

The fourth proportional to 207,280.64, 310,920.36 and 65,136.44 is: 97,704.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,280.64 : 310,920.36 = 65,136.44 : x
  2. Step 2: Convert to fraction form
    207,280.64/310,920.36 = 65,136.44/x
  3. Step 3: Cross multiply
    207,280.64x = 310,920.36 × 65,136.44
  4. Step 4: Simplify right side
    207,280.64x = 20,252,245,373.92
  5. Step 5: Solve for x
    x = 20,252,245,373.92/207,280.64
  6. Step 6: Final answer
    x = 97,704.47

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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.