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Finding the Fourth Proportional to 612,801.10, 918,906.39 and 213,433.03

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Solution

The fourth proportional to 612,801.10, 918,906.39 and 213,433.03 is: 320,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,801.10 : 918,906.39 = 213,433.03 : x
  2. Step 2: Convert to fraction form
    612,801.10/918,906.39 = 213,433.03/x
  3. Step 3: Cross multiply
    612,801.10x = 918,906.39 × 213,433.03
  4. Step 4: Simplify right side
    612,801.10x = 196,124,970,509.53
  5. Step 5: Solve for x
    x = 196,124,970,509.53/612,801.10
  6. Step 6: Final answer
    x = 320,046.70

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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.