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Finding the Fourth Proportional to 207,143.42, 310,715.16 and 65,010.64

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Solution

The fourth proportional to 207,143.42, 310,715.16 and 65,010.64 is: 97,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,143.42 : 310,715.16 = 65,010.64 : x
  2. Step 2: Convert to fraction form
    207,143.42/310,715.16 = 65,010.64/x
  3. Step 3: Cross multiply
    207,143.42x = 310,715.16 × 65,010.64
  4. Step 4: Simplify right side
    207,143.42x = 20,199,791,409.30
  5. Step 5: Solve for x
    x = 20,199,791,409.30/207,143.42
  6. Step 6: Final answer
    x = 97,515.97

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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.