Home / 288,588,707.76-398,583,389.16-189,909,986.28

Finding the Fourth Proportional to 288,588,707.76, 398,583,389.16 and 189,909,986.28

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Solution

The fourth proportional to 288,588,707.76, 398,583,389.16 and 189,909,986.28 is: 262,293,582.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,588,707.76 : 398,583,389.16 = 189,909,986.28 : x
  2. Step 2: Convert to fraction form
    288,588,707.76/398,583,389.16 = 189,909,986.28/x
  3. Step 3: Cross multiply
    288,588,707.76x = 398,583,389.16 × 189,909,986.28
  4. Step 4: Simplify right side
    288,588,707.76x = 75,694,965,966,811,504
  5. Step 5: Solve for x
    x = 75,694,965,966,811,504/288,588,707.76
  6. Step 6: Final answer
    x = 262,293,582.29

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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.