Home / 281,914.32-389,022.76-154,587.20

Finding the Fourth Proportional to 281,914.32, 389,022.76 and 154,587.20

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Solution

The fourth proportional to 281,914.32, 389,022.76 and 154,587.20 is: 213,319.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,914.32 : 389,022.76 = 154,587.20 : x
  2. Step 2: Convert to fraction form
    281,914.32/389,022.76 = 154,587.20/x
  3. Step 3: Cross multiply
    281,914.32x = 389,022.76 × 154,587.20
  4. Step 4: Simplify right side
    281,914.32x = 60,137,939,204.67
  5. Step 5: Solve for x
    x = 60,137,939,204.67/281,914.32
  6. Step 6: Final answer
    x = 213,319.92

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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.