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Finding the Fourth Proportional to 281,297.84, 388,191.44 and 153,981.48

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Solution

The fourth proportional to 281,297.84, 388,191.44 and 153,981.48 is: 212,494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,297.84 : 388,191.44 = 153,981.48 : x
  2. Step 2: Convert to fraction form
    281,297.84/388,191.44 = 153,981.48/x
  3. Step 3: Cross multiply
    281,297.84x = 388,191.44 × 153,981.48
  4. Step 4: Simplify right side
    281,297.84x = 59,774,292,454.53
  5. Step 5: Solve for x
    x = 59,774,292,454.53/281,297.84
  6. Step 6: Final answer
    x = 212,494.67

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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.