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Finding the Fourth Proportional to 281,521.88, 388,506.51 and 160,660.76

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Solution

The fourth proportional to 281,521.88, 388,506.51 and 160,660.76 is: 221,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,521.88 : 388,506.51 = 160,660.76 : x
  2. Step 2: Convert to fraction form
    281,521.88/388,506.51 = 160,660.76/x
  3. Step 3: Cross multiply
    281,521.88x = 388,506.51 × 160,660.76
  4. Step 4: Simplify right side
    281,521.88x = 62,417,751,161.55
  5. Step 5: Solve for x
    x = 62,417,751,161.55/281,521.88
  6. Step 6: Final answer
    x = 221,715.45

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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.