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Finding the Fourth Proportional to 281,480.97, 388,347.28 and 160,535.28

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Solution

The fourth proportional to 281,480.97, 388,347.28 and 160,535.28 is: 221,483.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,480.97 : 388,347.28 = 160,535.28 : x
  2. Step 2: Convert to fraction form
    281,480.97/388,347.28 = 160,535.28/x
  3. Step 3: Cross multiply
    281,480.97x = 388,347.28 × 160,535.28
  4. Step 4: Simplify right side
    281,480.97x = 62,343,438,930.70
  5. Step 5: Solve for x
    x = 62,343,438,930.70/281,480.97
  6. Step 6: Final answer
    x = 221,483.67

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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.