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Finding the Fourth Proportional to 281,480.04, 388,445.76 and 154,161

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Solution

The fourth proportional to 281,480.04, 388,445.76 and 154,161 is: 212,743.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,480.04 : 388,445.76 = 154,161 : x
  2. Step 2: Convert to fraction form
    281,480.04/388,445.76 = 154,161/x
  3. Step 3: Cross multiply
    281,480.04x = 388,445.76 × 154,161
  4. Step 4: Simplify right side
    281,480.04x = 59,883,186,807.36
  5. Step 5: Solve for x
    x = 59,883,186,807.36/281,480.04
  6. Step 6: Final answer
    x = 212,743.99

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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.