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Finding the Fourth Proportional to 303,501.28, 455,135.28 and 209,722.72

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Solution

The fourth proportional to 303,501.28, 455,135.28 and 209,722.72 is: 314,503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,501.28 : 455,135.28 = 209,722.72 : x
  2. Step 2: Convert to fraction form
    303,501.28/455,135.28 = 209,722.72/x
  3. Step 3: Cross multiply
    303,501.28x = 455,135.28 × 209,722.72
  4. Step 4: Simplify right side
    303,501.28x = 95,452,208,889.56
  5. Step 5: Solve for x
    x = 95,452,208,889.56/303,501.28
  6. Step 6: Final answer
    x = 314,503.48

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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.