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Finding the Fourth Proportional to 388,557, 536,208.66 and 227,404.26

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Solution

The fourth proportional to 388,557, 536,208.66 and 227,404.26 is: 313,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,557 : 536,208.66 = 227,404.26 : x
  2. Step 2: Convert to fraction form
    388,557/536,208.66 = 227,404.26/x
  3. Step 3: Cross multiply
    388,557x = 536,208.66 × 227,404.26
  4. Step 4: Simplify right side
    388,557x = 121,936,133,532.89
  5. Step 5: Solve for x
    x = 121,936,133,532.89/388,557
  6. Step 6: Final answer
    x = 313,817.88

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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.