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Finding the Fourth Proportional to 356,635.57, 492,207.45 and 220,713.30

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Solution

The fourth proportional to 356,635.57, 492,207.45 and 220,713.30 is: 304,615.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,635.57 : 492,207.45 = 220,713.30 : x
  2. Step 2: Convert to fraction form
    356,635.57/492,207.45 = 220,713.30/x
  3. Step 3: Cross multiply
    356,635.57x = 492,207.45 × 220,713.30
  4. Step 4: Simplify right side
    356,635.57x = 108,636,730,574.09
  5. Step 5: Solve for x
    x = 108,636,730,574.09/356,635.57
  6. Step 6: Final answer
    x = 304,615.52

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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.