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Finding the Fourth Proportional to 656,616, 985,019.04 and 207,184.32

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Solution

The fourth proportional to 656,616, 985,019.04 and 207,184.32 is: 310,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,616 : 985,019.04 = 207,184.32 : x
  2. Step 2: Convert to fraction form
    656,616/985,019.04 = 207,184.32/x
  3. Step 3: Cross multiply
    656,616x = 985,019.04 × 207,184.32
  4. Step 4: Simplify right side
    656,616x = 204,080,499,989.45
  5. Step 5: Solve for x
    x = 204,080,499,989.45/656,616
  6. Step 6: Final answer
    x = 310,806.47

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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.