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Finding the Fourth Proportional to 356,634.71, 492,206.24 and 220,712.42

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Solution

The fourth proportional to 356,634.71, 492,206.24 and 220,712.42 is: 304,614.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,634.71 : 492,206.24 = 220,712.42 : x
  2. Step 2: Convert to fraction form
    356,634.71/492,206.24 = 220,712.42/x
  3. Step 3: Cross multiply
    356,634.71x = 492,206.24 × 220,712.42
  4. Step 4: Simplify right side
    356,634.71x = 108,636,032,151.80
  5. Step 5: Solve for x
    x = 108,636,032,151.80/356,634.71
  6. Step 6: Final answer
    x = 304,614.30

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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.