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Finding the Fourth Proportional to 403,393.52, 556,696.32 and 222,118.76

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Solution

The fourth proportional to 403,393.52, 556,696.32 and 222,118.76 is: 306,531.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,393.52 : 556,696.32 = 222,118.76 : x
  2. Step 2: Convert to fraction form
    403,393.52/556,696.32 = 222,118.76/x
  3. Step 3: Cross multiply
    403,393.52x = 556,696.32 × 222,118.76
  4. Step 4: Simplify right side
    403,393.52x = 123,652,696,294.96
  5. Step 5: Solve for x
    x = 123,652,696,294.96/403,393.52
  6. Step 6: Final answer
    x = 306,531.19

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Half scale
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Double scale
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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.