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Finding the Fourth Proportional to 356,612.48, 492,175.62 and 220,690.20

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Solution

The fourth proportional to 356,612.48, 492,175.62 and 220,690.20 is: 304,583.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,612.48 : 492,175.62 = 220,690.20 : x
  2. Step 2: Convert to fraction form
    356,612.48/492,175.62 = 220,690.20/x
  3. Step 3: Cross multiply
    356,612.48x = 492,175.62 × 220,690.20
  4. Step 4: Simplify right side
    356,612.48x = 108,618,336,012.92
  5. Step 5: Solve for x
    x = 108,618,336,012.92/356,612.48
  6. Step 6: Final answer
    x = 304,583.67

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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.