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Finding the Fourth Proportional to 388,284.93, 535,728.58 and 227,179.57

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Solution

The fourth proportional to 388,284.93, 535,728.58 and 227,179.57 is: 313,446.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,284.93 : 535,728.58 = 227,179.57 : x
  2. Step 2: Convert to fraction form
    388,284.93/535,728.58 = 227,179.57/x
  3. Step 3: Cross multiply
    388,284.93x = 535,728.58 × 227,179.57
  4. Step 4: Simplify right side
    388,284.93x = 121,706,588,441.11
  5. Step 5: Solve for x
    x = 121,706,588,441.11/388,284.93
  6. Step 6: Final answer
    x = 313,446.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.