Home / 388,721.40-536,252.22-227,477.52

Finding the Fourth Proportional to 388,721.40, 536,252.22 and 227,477.52

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Solution

The fourth proportional to 388,721.40, 536,252.22 and 227,477.52 is: 313,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,721.40 : 536,252.22 = 227,477.52 : x
  2. Step 2: Convert to fraction form
    388,721.40/536,252.22 = 227,477.52/x
  3. Step 3: Cross multiply
    388,721.40x = 536,252.22 × 227,477.52
  4. Step 4: Simplify right side
    388,721.40x = 121,985,325,100.09
  5. Step 5: Solve for x
    x = 121,985,325,100.09/388,721.40
  6. Step 6: Final answer
    x = 313,811.70

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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.