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Finding the Fourth Proportional to 207,056.75, 310,587.98 and 136,431.50

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Solution

The fourth proportional to 207,056.75, 310,587.98 and 136,431.50 is: 204,649.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,056.75 : 310,587.98 = 136,431.50 : x
  2. Step 2: Convert to fraction form
    207,056.75/310,587.98 = 136,431.50/x
  3. Step 3: Cross multiply
    207,056.75x = 310,587.98 × 136,431.50
  4. Step 4: Simplify right side
    207,056.75x = 42,373,981,758.27
  5. Step 5: Solve for x
    x = 42,373,981,758.27/207,056.75
  6. Step 6: Final answer
    x = 204,649.13

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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.