Home / 388,715.18-536,243.58-227,470.40

Finding the Fourth Proportional to 388,715.18, 536,243.58 and 227,470.40

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Solution

The fourth proportional to 388,715.18, 536,243.58 and 227,470.40 is: 313,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,715.18 : 536,243.58 = 227,470.40 : x
  2. Step 2: Convert to fraction form
    388,715.18/536,243.58 = 227,470.40/x
  3. Step 3: Cross multiply
    388,715.18x = 536,243.58 × 227,470.40
  4. Step 4: Simplify right side
    388,715.18x = 121,979,541,640.03
  5. Step 5: Solve for x
    x = 121,979,541,640.03/388,715.18
  6. Step 6: Final answer
    x = 313,801.85

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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.