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Finding the Fourth Proportional to 281,374.59, 388,306.71 and 154,051.05

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Solution

The fourth proportional to 281,374.59, 388,306.71 and 154,051.05 is: 212,595.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,374.59 : 388,306.71 = 154,051.05 : x
  2. Step 2: Convert to fraction form
    281,374.59/388,306.71 = 154,051.05/x
  3. Step 3: Cross multiply
    281,374.59x = 388,306.71 × 154,051.05
  4. Step 4: Simplify right side
    281,374.59x = 59,819,056,397.55
  5. Step 5: Solve for x
    x = 59,819,056,397.55/281,374.59
  6. Step 6: Final answer
    x = 212,595.80

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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.