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Finding the Fourth Proportional to 217,510.17, 326,384.17 and 84,395.68

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Solution

The fourth proportional to 217,510.17, 326,384.17 and 84,395.68 is: 126,639.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,510.17 : 326,384.17 = 84,395.68 : x
  2. Step 2: Convert to fraction form
    217,510.17/326,384.17 = 84,395.68/x
  3. Step 3: Cross multiply
    217,510.17x = 326,384.17 × 84,395.68
  4. Step 4: Simplify right side
    217,510.17x = 27,545,413,968.39
  5. Step 5: Solve for x
    x = 27,545,413,968.39/217,510.17
  6. Step 6: Final answer
    x = 126,639.66

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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.