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Finding the Fourth Proportional to 207,143.39, 310,715.11 and 65,010.59

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Solution

The fourth proportional to 207,143.39, 310,715.11 and 65,010.59 is: 97,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,143.39 : 310,715.11 = 65,010.59 : x
  2. Step 2: Convert to fraction form
    207,143.39/310,715.11 = 65,010.59/x
  3. Step 3: Cross multiply
    207,143.39x = 310,715.11 × 65,010.59
  4. Step 4: Simplify right side
    207,143.39x = 20,199,773,697.97
  5. Step 5: Solve for x
    x = 20,199,773,697.97/207,143.39
  6. Step 6: Final answer
    x = 97,515.90

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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.