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Finding the Fourth Proportional to 303,715.12, 455,584.72 and 114,156.40

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Solution

The fourth proportional to 303,715.12, 455,584.72 and 114,156.40 is: 171,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,715.12 : 455,584.72 = 114,156.40 : x
  2. Step 2: Convert to fraction form
    303,715.12/455,584.72 = 114,156.40/x
  3. Step 3: Cross multiply
    303,715.12x = 455,584.72 × 114,156.40
  4. Step 4: Simplify right side
    303,715.12x = 52,007,911,530.21
  5. Step 5: Solve for x
    x = 52,007,911,530.21/303,715.12
  6. Step 6: Final answer
    x = 171,239.13

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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.