Home / 281,418,894.64-388,358,112.09-155,979,180.40

Finding the Fourth Proportional to 281,418,894.64, 388,358,112.09 and 155,979,180.40

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Solution

The fourth proportional to 281,418,894.64, 388,358,112.09 and 155,979,180.40 is: 215,251,289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,418,894.64 : 388,358,112.09 = 155,979,180.40 : x
  2. Step 2: Convert to fraction form
    281,418,894.64/388,358,112.09 = 155,979,180.40/x
  3. Step 3: Cross multiply
    281,418,894.64x = 388,358,112.09 × 155,979,180.40
  4. Step 4: Simplify right side
    281,418,894.64x = 60,575,780,025,489,528
  5. Step 5: Solve for x
    x = 60,575,780,025,489,528/281,418,894.64
  6. Step 6: Final answer
    x = 215,251,289.73

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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.