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Finding the Fourth Proportional to 356,398.08, 491,829.18 and 213,158.12

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Solution

The fourth proportional to 356,398.08, 491,829.18 and 213,158.12 is: 294,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,398.08 : 491,829.18 = 213,158.12 : x
  2. Step 2: Convert to fraction form
    356,398.08/491,829.18 = 213,158.12/x
  3. Step 3: Cross multiply
    356,398.08x = 491,829.18 × 213,158.12
  4. Step 4: Simplify right side
    356,398.08x = 104,837,383,369.94
  5. Step 5: Solve for x
    x = 104,837,383,369.94/356,398.08
  6. Step 6: Final answer
    x = 294,158.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.