Home / 288,588,689.80-398,583,364.28-189,909,968.31

Finding the Fourth Proportional to 288,588,689.80, 398,583,364.28 and 189,909,968.31

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Solution

The fourth proportional to 288,588,689.80, 398,583,364.28 and 189,909,968.31 is: 262,293,557.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,588,689.80 : 398,583,364.28 = 189,909,968.31 : x
  2. Step 2: Convert to fraction form
    288,588,689.80/398,583,364.28 = 189,909,968.31/x
  3. Step 3: Cross multiply
    288,588,689.80x = 398,583,364.28 × 189,909,968.31
  4. Step 4: Simplify right side
    288,588,689.80x = 75,694,954,078,358,432
  5. Step 5: Solve for x
    x = 75,694,954,078,358,432/288,588,689.80
  6. Step 6: Final answer
    x = 262,293,557.42

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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.