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Finding the Fourth Proportional to 281,511.58, 388,486.19 and 152,451.07

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Solution

The fourth proportional to 281,511.58, 388,486.19 and 152,451.07 is: 210,382.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,511.58 : 388,486.19 = 152,451.07 : x
  2. Step 2: Convert to fraction form
    281,511.58/388,486.19 = 152,451.07/x
  3. Step 3: Cross multiply
    281,511.58x = 388,486.19 × 152,451.07
  4. Step 4: Simplify right side
    281,511.58x = 59,225,135,345.72
  5. Step 5: Solve for x
    x = 59,225,135,345.72/281,511.58
  6. Step 6: Final answer
    x = 210,382.59

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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.