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Finding the Fourth Proportional to 281,084.98, 387,900.35 and 153,760.58

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Solution

The fourth proportional to 281,084.98, 387,900.35 and 153,760.58 is: 212,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,084.98 : 387,900.35 = 153,760.58 : x
  2. Step 2: Convert to fraction form
    281,084.98/387,900.35 = 153,760.58/x
  3. Step 3: Cross multiply
    281,084.98x = 387,900.35 × 153,760.58
  4. Step 4: Simplify right side
    281,084.98x = 59,643,780,858.70
  5. Step 5: Solve for x
    x = 59,643,780,858.70/281,084.98
  6. Step 6: Final answer
    x = 212,191.28

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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.