Home / 288,880,556.68-398,655,940.93-156,721,553.20

Finding the Fourth Proportional to 288,880,556.68, 398,655,940.93 and 156,721,553.20

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Solution

The fourth proportional to 288,880,556.68, 398,655,940.93 and 156,721,553.20 is: 216,276,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,880,556.68 : 398,655,940.93 = 156,721,553.20 : x
  2. Step 2: Convert to fraction form
    288,880,556.68/398,655,940.93 = 156,721,553.20/x
  3. Step 3: Cross multiply
    288,880,556.68x = 398,655,940.93 × 156,721,553.20
  4. Step 4: Simplify right side
    288,880,556.68x = 62,477,978,253,568,608
  5. Step 5: Solve for x
    x = 62,477,978,253,568,608/288,880,556.68
  6. Step 6: Final answer
    x = 216,276,162.62

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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.