Home / 281,215.04-388,076.76-153,890.64

Finding the Fourth Proportional to 281,215.04, 388,076.76 and 153,890.64

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Solution

The fourth proportional to 281,215.04, 388,076.76 and 153,890.64 is: 212,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,215.04 : 388,076.76 = 153,890.64 : x
  2. Step 2: Convert to fraction form
    281,215.04/388,076.76 = 153,890.64/x
  3. Step 3: Cross multiply
    281,215.04x = 388,076.76 × 153,890.64
  4. Step 4: Simplify right side
    281,215.04x = 59,721,380,965.53
  5. Step 5: Solve for x
    x = 59,721,380,965.53/281,215.04
  6. Step 6: Final answer
    x = 212,369.09

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1.5x scale

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.