Home / 281,284.04-388,172.44-153,967.70

Finding the Fourth Proportional to 281,284.04, 388,172.44 and 153,967.70

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Solution

The fourth proportional to 281,284.04, 388,172.44 and 153,967.70 is: 212,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,284.04 : 388,172.44 = 153,967.70 : x
  2. Step 2: Convert to fraction form
    281,284.04/388,172.44 = 153,967.70/x
  3. Step 3: Cross multiply
    281,284.04x = 388,172.44 × 153,967.70
  4. Step 4: Simplify right side
    281,284.04x = 59,766,017,790.19
  5. Step 5: Solve for x
    x = 59,766,017,790.19/281,284.04
  6. Step 6: Final answer
    x = 212,475.68

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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.