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Finding the Fourth Proportional to 403,402.20, 556,690.40 and 222,110.40

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Solution

The fourth proportional to 403,402.20, 556,690.40 and 222,110.40 is: 306,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,402.20 : 556,690.40 = 222,110.40 : x
  2. Step 2: Convert to fraction form
    403,402.20/556,690.40 = 222,110.40/x
  3. Step 3: Cross multiply
    403,402.20x = 556,690.40 × 222,110.40
  4. Step 4: Simplify right side
    403,402.20x = 123,646,727,420.16
  5. Step 5: Solve for x
    x = 123,646,727,420.16/403,402.20
  6. Step 6: Final answer
    x = 306,509.80

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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.