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Finding the Fourth Proportional to 276,902.51, 415,353.72 and 66,540.45

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Solution

The fourth proportional to 276,902.51, 415,353.72 and 66,540.45 is: 99,810.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,902.51 : 415,353.72 = 66,540.45 : x
  2. Step 2: Convert to fraction form
    276,902.51/415,353.72 = 66,540.45/x
  3. Step 3: Cross multiply
    276,902.51x = 415,353.72 × 66,540.45
  4. Step 4: Simplify right side
    276,902.51x = 27,637,823,437.97
  5. Step 5: Solve for x
    x = 27,637,823,437.97/276,902.51
  6. Step 6: Final answer
    x = 99,810.67

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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.