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Finding the Fourth Proportional to 299,040.73, 448,499.93 and 85,751.51

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Solution

The fourth proportional to 299,040.73, 448,499.93 and 85,751.51 is: 128,609.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,040.73 : 448,499.93 = 85,751.51 : x
  2. Step 2: Convert to fraction form
    299,040.73/448,499.93 = 85,751.51/x
  3. Step 3: Cross multiply
    299,040.73x = 448,499.93 × 85,751.51
  4. Step 4: Simplify right side
    299,040.73x = 38,459,543,561.14
  5. Step 5: Solve for x
    x = 38,459,543,561.14/299,040.73
  6. Step 6: Final answer
    x = 128,609.72

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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.