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Finding the Fourth Proportional to 281,395.52, 388,325.82 and 154,071.08

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Solution

The fourth proportional to 281,395.52, 388,325.82 and 154,071.08 is: 212,618.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,395.52 : 388,325.82 = 154,071.08 : x
  2. Step 2: Convert to fraction form
    281,395.52/388,325.82 = 154,071.08/x
  3. Step 3: Cross multiply
    281,395.52x = 388,325.82 × 154,071.08
  4. Step 4: Simplify right side
    281,395.52x = 59,829,778,479.29
  5. Step 5: Solve for x
    x = 59,829,778,479.29/281,395.52
  6. Step 6: Final answer
    x = 212,618.09

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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.