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Finding the Fourth Proportional to 281,802.34, 388,886.67 and 154,478.85

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Solution

The fourth proportional to 281,802.34, 388,886.67 and 154,478.85 is: 213,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,802.34 : 388,886.67 = 154,478.85 : x
  2. Step 2: Convert to fraction form
    281,802.34/388,886.67 = 154,478.85/x
  3. Step 3: Cross multiply
    281,802.34x = 388,886.67 × 154,478.85
  4. Step 4: Simplify right side
    281,802.34x = 60,074,764,103.60
  5. Step 5: Solve for x
    x = 60,074,764,103.60/281,802.34
  6. Step 6: Final answer
    x = 213,180.50

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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.