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Finding the Fourth Proportional to 281,775.32, 388,848.18 and 154,456.28

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Solution

The fourth proportional to 281,775.32, 388,848.18 and 154,456.28 is: 213,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,775.32 : 388,848.18 = 154,456.28 : x
  2. Step 2: Convert to fraction form
    281,775.32/388,848.18 = 154,456.28/x
  3. Step 3: Cross multiply
    281,775.32x = 388,848.18 × 154,456.28
  4. Step 4: Simplify right side
    281,775.32x = 60,060,043,367.57
  5. Step 5: Solve for x
    x = 60,060,043,367.57/281,775.32
  6. Step 6: Final answer
    x = 213,148.70

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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.