Home / 388,721.12-536,251.86-227,477.32

Finding the Fourth Proportional to 388,721.12, 536,251.86 and 227,477.32

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Solution

The fourth proportional to 388,721.12, 536,251.86 and 227,477.32 is: 313,811.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,721.12 : 536,251.86 = 227,477.32 : x
  2. Step 2: Convert to fraction form
    388,721.12/536,251.86 = 227,477.32/x
  3. Step 3: Cross multiply
    388,721.12x = 536,251.86 × 227,477.32
  4. Step 4: Simplify right side
    388,721.12x = 121,985,135,957.82
  5. Step 5: Solve for x
    x = 121,985,135,957.82/388,721.12
  6. Step 6: Final answer
    x = 313,811.44

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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.