Home / 281,407,616.40-388,342,547.49-155,967,910.81

Finding the Fourth Proportional to 281,407,616.40, 388,342,547.49 and 155,967,910.81

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Solution

The fourth proportional to 281,407,616.40, 388,342,547.49 and 155,967,910.81 is: 215,235,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,407,616.40 : 388,342,547.49 = 155,967,910.81 : x
  2. Step 2: Convert to fraction form
    281,407,616.40/388,342,547.49 = 155,967,910.81/x
  3. Step 3: Cross multiply
    281,407,616.40x = 388,342,547.49 × 155,967,910.81
  4. Step 4: Simplify right side
    281,407,616.40x = 60,568,975,811,566,928
  5. Step 5: Solve for x
    x = 60,568,975,811,566,928/281,407,616.40
  6. Step 6: Final answer
    x = 215,235,737.35

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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.