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Finding the Fourth Proportional to 281,349.93, 388,262.90 and 154,025.52

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Solution

The fourth proportional to 281,349.93, 388,262.90 and 154,025.52 is: 212,555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,349.93 : 388,262.90 = 154,025.52 : x
  2. Step 2: Convert to fraction form
    281,349.93/388,262.90 = 154,025.52/x
  3. Step 3: Cross multiply
    281,349.93x = 388,262.90 × 154,025.52
  4. Step 4: Simplify right side
    281,349.93x = 59,802,395,069.21
  5. Step 5: Solve for x
    x = 59,802,395,069.21/281,349.93
  6. Step 6: Final answer
    x = 212,555.22

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1.5x scale

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.