Home / 281,328.40-388,278.42-160,509.12

Finding the Fourth Proportional to 281,328.40, 388,278.42 and 160,509.12

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Solution

The fourth proportional to 281,328.40, 388,278.42 and 160,509.12 is: 221,528.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,328.40 : 388,278.42 = 160,509.12 : x
  2. Step 2: Convert to fraction form
    281,328.40/388,278.42 = 160,509.12/x
  3. Step 3: Cross multiply
    281,328.40x = 388,278.42 × 160,509.12
  4. Step 4: Simplify right side
    281,328.40x = 62,322,227,509.19
  5. Step 5: Solve for x
    x = 62,322,227,509.19/281,328.40
  6. Step 6: Final answer
    x = 221,528.39

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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.