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Finding the Fourth Proportional to 223,557, 335,336.36 and 212,345

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Solution

The fourth proportional to 223,557, 335,336.36 and 212,345 is: 318,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,557 : 335,336.36 = 212,345 : x
  2. Step 2: Convert to fraction form
    223,557/335,336.36 = 212,345/x
  3. Step 3: Cross multiply
    223,557x = 335,336.36 × 212,345
  4. Step 4: Simplify right side
    223,557x = 71,206,999,364.20
  5. Step 5: Solve for x
    x = 71,206,999,364.20/223,557
  6. Step 6: Final answer
    x = 318,518.32

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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.