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Finding the Fourth Proportional to 281,220.44, 388,083.48 and 153,894.92

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Solution

The fourth proportional to 281,220.44, 388,083.48 and 153,894.92 is: 212,374.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,220.44 : 388,083.48 = 153,894.92 : x
  2. Step 2: Convert to fraction form
    281,220.44/388,083.48 = 153,894.92/x
  3. Step 3: Cross multiply
    281,220.44x = 388,083.48 × 153,894.92
  4. Step 4: Simplify right side
    281,220.44x = 59,724,074,167.50
  5. Step 5: Solve for x
    x = 59,724,074,167.50/281,220.44
  6. Step 6: Final answer
    x = 212,374.59

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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.