Home / 388,712.16-536,556.96-227,619

Finding the Fourth Proportional to 388,712.16, 536,556.96 and 227,619

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Solution

The fourth proportional to 388,712.16, 536,556.96 and 227,619 is: 314,192.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,712.16 : 536,556.96 = 227,619 : x
  2. Step 2: Convert to fraction form
    388,712.16/536,556.96 = 227,619/x
  3. Step 3: Cross multiply
    388,712.16x = 536,556.96 × 227,619
  4. Step 4: Simplify right side
    388,712.16x = 122,130,558,678.24
  5. Step 5: Solve for x
    x = 122,130,558,678.24/388,712.16
  6. Step 6: Final answer
    x = 314,192.79

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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.