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Finding the Fourth Proportional to 207,307.81, 310,960.71 and 80,960.89

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Solution

The fourth proportional to 207,307.81, 310,960.71 and 80,960.89 is: 121,440.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,307.81 : 310,960.71 = 80,960.89 : x
  2. Step 2: Convert to fraction form
    207,307.81/310,960.71 = 80,960.89/x
  3. Step 3: Cross multiply
    207,307.81x = 310,960.71 × 80,960.89
  4. Step 4: Simplify right side
    207,307.81x = 25,175,655,836.63
  5. Step 5: Solve for x
    x = 25,175,655,836.63/207,307.81
  6. Step 6: Final answer
    x = 121,440.94

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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.