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Finding the Fourth Proportional to 300,009.78, 450,015.12 and 122,516.82

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Solution

The fourth proportional to 300,009.78, 450,015.12 and 122,516.82 is: 183,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,009.78 : 450,015.12 = 122,516.82 : x
  2. Step 2: Convert to fraction form
    300,009.78/450,015.12 = 122,516.82/x
  3. Step 3: Cross multiply
    300,009.78x = 450,015.12 × 122,516.82
  4. Step 4: Simplify right side
    300,009.78x = 55,134,421,454.32
  5. Step 5: Solve for x
    x = 55,134,421,454.32/300,009.78
  6. Step 6: Final answer
    x = 183,775.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.