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Finding the Fourth Proportional to 281,373.39, 388,295.10 and 154,048.95

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Solution

The fourth proportional to 281,373.39, 388,295.10 and 154,048.95 is: 212,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,373.39 : 388,295.10 = 154,048.95 : x
  2. Step 2: Convert to fraction form
    281,373.39/388,295.10 = 154,048.95/x
  3. Step 3: Cross multiply
    281,373.39x = 388,295.10 × 154,048.95
  4. Step 4: Simplify right side
    281,373.39x = 59,816,452,445.15
  5. Step 5: Solve for x
    x = 59,816,452,445.15/281,373.39
  6. Step 6: Final answer
    x = 212,587.45

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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.