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Finding the Fourth Proportional to 281,757.74, 388,824.86 and 154,432.94

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Solution

The fourth proportional to 281,757.74, 388,824.86 and 154,432.94 is: 213,117.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,757.74 : 388,824.86 = 154,432.94 : x
  2. Step 2: Convert to fraction form
    281,757.74/388,824.86 = 154,432.94/x
  3. Step 3: Cross multiply
    281,757.74x = 388,824.86 × 154,432.94
  4. Step 4: Simplify right side
    281,757.74x = 60,047,363,558.60
  5. Step 5: Solve for x
    x = 60,047,363,558.60/281,757.74
  6. Step 6: Final answer
    x = 213,117.00

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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.