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Finding the Fourth Proportional to 401,919.84, 554,656.68 and 220,648.86

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Solution

The fourth proportional to 401,919.84, 554,656.68 and 220,648.86 is: 304,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,919.84 : 554,656.68 = 220,648.86 : x
  2. Step 2: Convert to fraction form
    401,919.84/554,656.68 = 220,648.86/x
  3. Step 3: Cross multiply
    401,919.84x = 554,656.68 × 220,648.86
  4. Step 4: Simplify right side
    401,919.84x = 122,384,364,133.39
  5. Step 5: Solve for x
    x = 122,384,364,133.39/401,919.84
  6. Step 6: Final answer
    x = 304,499.43

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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.