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Finding the Fourth Proportional to 281,160.72, 388,028.48 and 153,855.45

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Solution

The fourth proportional to 281,160.72, 388,028.48 and 153,855.45 is: 212,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,160.72 : 388,028.48 = 153,855.45 : x
  2. Step 2: Convert to fraction form
    281,160.72/388,028.48 = 153,855.45/x
  3. Step 3: Cross multiply
    281,160.72x = 388,028.48 × 153,855.45
  4. Step 4: Simplify right side
    281,160.72x = 59,700,295,633.94
  5. Step 5: Solve for x
    x = 59,700,295,633.94/281,160.72
  6. Step 6: Final answer
    x = 212,335.12

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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.