Home / 281,239,410.78-388,105,194.14-155,788,854.11

Finding the Fourth Proportional to 281,239,410.78, 388,105,194.14 and 155,788,854.11

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Solution

The fourth proportional to 281,239,410.78, 388,105,194.14 and 155,788,854.11 is: 214,985,742.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,239,410.78 : 388,105,194.14 = 155,788,854.11 : x
  2. Step 2: Convert to fraction form
    281,239,410.78/388,105,194.14 = 155,788,854.11/x
  3. Step 3: Cross multiply
    281,239,410.78x = 388,105,194.14 × 155,788,854.11
  4. Step 4: Simplify right side
    281,239,410.78x = 60,462,463,470,179,952
  5. Step 5: Solve for x
    x = 60,462,463,470,179,952/281,239,410.78
  6. Step 6: Final answer
    x = 214,985,742.23

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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.