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Finding the Fourth Proportional to 281,228.41, 388,119.45 and 160,374.79

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Solution

The fourth proportional to 281,228.41, 388,119.45 and 160,374.79 is: 221,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,228.41 : 388,119.45 = 160,374.79 : x
  2. Step 2: Convert to fraction form
    281,228.41/388,119.45 = 160,374.79/x
  3. Step 3: Cross multiply
    281,228.41x = 388,119.45 × 160,374.79
  4. Step 4: Simplify right side
    281,228.41x = 62,244,575,288.67
  5. Step 5: Solve for x
    x = 62,244,575,288.67/281,228.41
  6. Step 6: Final answer
    x = 221,331.04

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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.