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Finding the Fourth Proportional to 253,768.79, 380,623.53 and 101,959.72

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Solution

The fourth proportional to 253,768.79, 380,623.53 and 101,959.72 is: 152,927.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,768.79 : 380,623.53 = 101,959.72 : x
  2. Step 2: Convert to fraction form
    253,768.79/380,623.53 = 101,959.72/x
  3. Step 3: Cross multiply
    253,768.79x = 380,623.53 × 101,959.72
  4. Step 4: Simplify right side
    253,768.79x = 38,808,268,544.21
  5. Step 5: Solve for x
    x = 38,808,268,544.21/253,768.79
  6. Step 6: Final answer
    x = 152,927.67

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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.