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Finding the Fourth Proportional to 300,047.08, 450,072.78 and 89,686.84

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Solution

The fourth proportional to 300,047.08, 450,072.78 and 89,686.84 is: 134,530.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,047.08 : 450,072.78 = 89,686.84 : x
  2. Step 2: Convert to fraction form
    300,047.08/450,072.78 = 89,686.84/x
  3. Step 3: Cross multiply
    300,047.08x = 450,072.78 × 89,686.84
  4. Step 4: Simplify right side
    300,047.08x = 40,365,605,408.22
  5. Step 5: Solve for x
    x = 40,365,605,408.22/300,047.08
  6. Step 6: Final answer
    x = 134,530.91

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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.