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Finding the Fourth Proportional to 281,556, 388,547.28 and 154,232.10

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Solution

The fourth proportional to 281,556, 388,547.28 and 154,232.10 is: 212,840.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,556 : 388,547.28 = 154,232.10 : x
  2. Step 2: Convert to fraction form
    281,556/388,547.28 = 154,232.10/x
  3. Step 3: Cross multiply
    281,556x = 388,547.28 × 154,232.10
  4. Step 4: Simplify right side
    281,556x = 59,926,462,943.69
  5. Step 5: Solve for x
    x = 59,926,462,943.69/281,556
  6. Step 6: Final answer
    x = 212,840.30

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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.