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Finding the Fourth Proportional to 403,989.66, 557,498.74 and 222,718.45

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Solution

The fourth proportional to 403,989.66, 557,498.74 and 222,718.45 is: 307,347.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,989.66 : 557,498.74 = 222,718.45 : x
  2. Step 2: Convert to fraction form
    403,989.66/557,498.74 = 222,718.45/x
  3. Step 3: Cross multiply
    403,989.66x = 557,498.74 × 222,718.45
  4. Step 4: Simplify right side
    403,989.66x = 124,165,255,249.75
  5. Step 5: Solve for x
    x = 124,165,255,249.75/403,989.66
  6. Step 6: Final answer
    x = 307,347.61

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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.