Home / 281,397.18-388,328.04-154,072.74

Finding the Fourth Proportional to 281,397.18, 388,328.04 and 154,072.74

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Solution

The fourth proportional to 281,397.18, 388,328.04 and 154,072.74 is: 212,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,397.18 : 388,328.04 = 154,072.74 : x
  2. Step 2: Convert to fraction form
    281,397.18/388,328.04 = 154,072.74/x
  3. Step 3: Cross multiply
    281,397.18x = 388,328.04 × 154,072.74
  4. Step 4: Simplify right side
    281,397.18x = 59,830,765,141.63
  5. Step 5: Solve for x
    x = 59,830,765,141.63/281,397.18
  6. Step 6: Final answer
    x = 212,620.34

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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.