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Finding the Fourth Proportional to 281,569.84, 388,566.84 and 154,242.64

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Solution

The fourth proportional to 281,569.84, 388,566.84 and 154,242.64 is: 212,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,569.84 : 388,566.84 = 154,242.64 : x
  2. Step 2: Convert to fraction form
    281,569.84/388,566.84 = 154,242.64/x
  3. Step 3: Cross multiply
    281,569.84x = 388,566.84 × 154,242.64
  4. Step 4: Simplify right side
    281,569.84x = 59,933,575,218.06
  5. Step 5: Solve for x
    x = 59,933,575,218.06/281,569.84
  6. Step 6: Final answer
    x = 212,855.10

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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.