Home / 281,142.61-387,986.48-153,818.21

Finding the Fourth Proportional to 281,142.61, 387,986.48 and 153,818.21

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Solution

The fourth proportional to 281,142.61, 387,986.48 and 153,818.21 is: 212,274.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,142.61 : 387,986.48 = 153,818.21 : x
  2. Step 2: Convert to fraction form
    281,142.61/387,986.48 = 153,818.21/x
  3. Step 3: Cross multiply
    281,142.61x = 387,986.48 × 153,818.21
  4. Step 4: Simplify right side
    281,142.61x = 59,679,383,917.87
  5. Step 5: Solve for x
    x = 59,679,383,917.87/281,142.61
  6. Step 6: Final answer
    x = 212,274.42

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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.