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Finding the Fourth Proportional to 281,521.55, 388,495.36 and 160,659.73

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Solution

The fourth proportional to 281,521.55, 388,495.36 and 160,659.73 is: 221,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,521.55 : 388,495.36 = 160,659.73 : x
  2. Step 2: Convert to fraction form
    281,521.55/388,495.36 = 160,659.73/x
  3. Step 3: Cross multiply
    281,521.55x = 388,495.36 × 160,659.73
  4. Step 4: Simplify right side
    281,521.55x = 62,415,556,898.08
  5. Step 5: Solve for x
    x = 62,415,556,898.08/281,521.55
  6. Step 6: Final answer
    x = 221,707.92

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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.