Home / 281,540.02-388,525.32-154,220.20

Finding the Fourth Proportional to 281,540.02, 388,525.32 and 154,220.20

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Solution

The fourth proportional to 281,540.02, 388,525.32 and 154,220.20 is: 212,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,540.02 : 388,525.32 = 154,220.20 : x
  2. Step 2: Convert to fraction form
    281,540.02/388,525.32 = 154,220.20/x
  3. Step 3: Cross multiply
    281,540.02x = 388,525.32 × 154,220.20
  4. Step 4: Simplify right side
    281,540.02x = 59,918,452,555.46
  5. Step 5: Solve for x
    x = 59,918,452,555.46/281,540.02
  6. Step 6: Final answer
    x = 212,823.93

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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.