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Finding the Fourth Proportional to 303,504.28, 455,139.78 and 209,725.72

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Solution

The fourth proportional to 303,504.28, 455,139.78 and 209,725.72 is: 314,507.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,504.28 : 455,139.78 = 209,725.72 : x
  2. Step 2: Convert to fraction form
    303,504.28/455,139.78 = 209,725.72/x
  3. Step 3: Cross multiply
    303,504.28x = 455,139.78 × 209,725.72
  4. Step 4: Simplify right side
    303,504.28x = 95,454,518,061.14
  5. Step 5: Solve for x
    x = 95,454,518,061.14/303,504.28
  6. Step 6: Final answer
    x = 314,507.98

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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.