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Finding the Fourth Proportional to 356,384.54, 491,810.58 and 213,144.59

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Solution

The fourth proportional to 356,384.54, 491,810.58 and 213,144.59 is: 294,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,384.54 : 491,810.58 = 213,144.59 : x
  2. Step 2: Convert to fraction form
    356,384.54/491,810.58 = 213,144.59/x
  3. Step 3: Cross multiply
    356,384.54x = 491,810.58 × 213,144.59
  4. Step 4: Simplify right side
    356,384.54x = 104,826,764,431.76
  5. Step 5: Solve for x
    x = 104,826,764,431.76/356,384.54
  6. Step 6: Final answer
    x = 294,139.48

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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.