Home / 281,607,369.08-388,636,128.78-157,848,078.20

Finding the Fourth Proportional to 281,607,369.08, 388,636,128.78 and 157,848,078.20

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Solution

The fourth proportional to 281,607,369.08, 388,636,128.78 and 157,848,078.20 is: 217,840,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,607,369.08 : 388,636,128.78 = 157,848,078.20 : x
  2. Step 2: Convert to fraction form
    281,607,369.08/388,636,128.78 = 157,848,078.20/x
  3. Step 3: Cross multiply
    281,607,369.08x = 388,636,128.78 × 157,848,078.20
  4. Step 4: Simplify right side
    281,607,369.08x = 61,345,466,047,010,704
  5. Step 5: Solve for x
    x = 61,345,466,047,010,704/281,607,369.08
  6. Step 6: Final answer
    x = 217,840,414.64

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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.