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Finding the Fourth Proportional to 207,935.70, 312,013.44 and 147,536.31

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Solution

The fourth proportional to 207,935.70, 312,013.44 and 147,536.31 is: 221,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,935.70 : 312,013.44 = 147,536.31 : x
  2. Step 2: Convert to fraction form
    207,935.70/312,013.44 = 147,536.31/x
  3. Step 3: Cross multiply
    207,935.70x = 312,013.44 × 147,536.31
  4. Step 4: Simplify right side
    207,935.70x = 46,033,309,730.50
  5. Step 5: Solve for x
    x = 46,033,309,730.50/207,935.70
  6. Step 6: Final answer
    x = 221,382.43

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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.