Home / 388,715.36-536,243.92-227,471.52

Finding the Fourth Proportional to 388,715.36, 536,243.92 and 227,471.52

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Solution

The fourth proportional to 388,715.36, 536,243.92 and 227,471.52 is: 313,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,715.36 : 536,243.92 = 227,471.52 : x
  2. Step 2: Convert to fraction form
    388,715.36/536,243.92 = 227,471.52/x
  3. Step 3: Cross multiply
    388,715.36x = 536,243.92 × 227,471.52
  4. Step 4: Simplify right side
    388,715.36x = 121,980,219,573.16
  5. Step 5: Solve for x
    x = 121,980,219,573.16/388,715.36
  6. Step 6: Final answer
    x = 313,803.45

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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.