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Finding the Fourth Proportional to 281,511.30, 388,513.52 and 160,670.84

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Solution

The fourth proportional to 281,511.30, 388,513.52 and 160,670.84 is: 221,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,511.30 : 388,513.52 = 160,670.84 : x
  2. Step 2: Convert to fraction form
    281,511.30/388,513.52 = 160,670.84/x
  3. Step 3: Cross multiply
    281,511.30x = 388,513.52 × 160,670.84
  4. Step 4: Simplify right side
    281,511.30x = 62,422,793,609.76
  5. Step 5: Solve for x
    x = 62,422,793,609.76/281,511.30
  6. Step 6: Final answer
    x = 221,741.70

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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.