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Finding the Fourth Proportional to 356,383.16, 491,808.72 and 213,143.18

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Solution

The fourth proportional to 356,383.16, 491,808.72 and 213,143.18 is: 294,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,383.16 : 491,808.72 = 213,143.18 : x
  2. Step 2: Convert to fraction form
    356,383.16/491,808.72 = 213,143.18/x
  3. Step 3: Cross multiply
    356,383.16x = 491,808.72 × 213,143.18
  4. Step 4: Simplify right side
    356,383.16x = 104,825,674,532.53
  5. Step 5: Solve for x
    x = 104,825,674,532.53/356,383.16
  6. Step 6: Final answer
    x = 294,137.56

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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.