Home / 281,290.24-388,177.52-160,428.40

Finding the Fourth Proportional to 281,290.24, 388,177.52 and 160,428.40

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Solution

The fourth proportional to 281,290.24, 388,177.52 and 160,428.40 is: 221,389.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,290.24 : 388,177.52 = 160,428.40 : x
  2. Step 2: Convert to fraction form
    281,290.24/388,177.52 = 160,428.40/x
  3. Step 3: Cross multiply
    281,290.24x = 388,177.52 × 160,428.40
  4. Step 4: Simplify right side
    281,290.24x = 62,274,698,449.57
  5. Step 5: Solve for x
    x = 62,274,698,449.57/281,290.24
  6. Step 6: Final answer
    x = 221,389.47

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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.