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Finding the Fourth Proportional to 550,919.21, 760,345.18 and 305,959.01

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Solution

The fourth proportional to 550,919.21, 760,345.18 and 305,959.01 is: 422,266.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,919.21 : 760,345.18 = 305,959.01 : x
  2. Step 2: Convert to fraction form
    550,919.21/760,345.18 = 305,959.01/x
  3. Step 3: Cross multiply
    550,919.21x = 760,345.18 × 305,959.01
  4. Step 4: Simplify right side
    550,919.21x = 232,634,453,964.45
  5. Step 5: Solve for x
    x = 232,634,453,964.45/550,919.21
  6. Step 6: Final answer
    x = 422,266.01

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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.