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Finding the Fourth Proportional to 404,023.36, 606,213.55 and 211,851.90

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Solution

The fourth proportional to 404,023.36, 606,213.55 and 211,851.90 is: 317,871.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,023.36 : 606,213.55 = 211,851.90 : x
  2. Step 2: Convert to fraction form
    404,023.36/606,213.55 = 211,851.90/x
  3. Step 3: Cross multiply
    404,023.36x = 606,213.55 × 211,851.90
  4. Step 4: Simplify right side
    404,023.36x = 128,427,492,373.25
  5. Step 5: Solve for x
    x = 128,427,492,373.25/404,023.36
  6. Step 6: Final answer
    x = 317,871.45

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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.