Home / 281,742.84-388,814.85-154,417.32

Finding the Fourth Proportional to 281,742.84, 388,814.85 and 154,417.32

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Solution

The fourth proportional to 281,742.84, 388,814.85 and 154,417.32 is: 213,101.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,742.84 : 388,814.85 = 154,417.32 : x
  2. Step 2: Convert to fraction form
    281,742.84/388,814.85 = 154,417.32/x
  3. Step 3: Cross multiply
    281,742.84x = 388,814.85 × 154,417.32
  4. Step 4: Simplify right side
    281,742.84x = 60,039,747,113.20
  5. Step 5: Solve for x
    x = 60,039,747,113.20/281,742.84
  6. Step 6: Final answer
    x = 213,101.23

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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.