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Finding the Fourth Proportional to 281,401.60, 388,371.20 and 160,515.20

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Solution

The fourth proportional to 281,401.60, 388,371.20 and 160,515.20 is: 221,532.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,401.60 : 388,371.20 = 160,515.20 : x
  2. Step 2: Convert to fraction form
    281,401.60/388,371.20 = 160,515.20/x
  3. Step 3: Cross multiply
    281,401.60x = 388,371.20 × 160,515.20
  4. Step 4: Simplify right side
    281,401.60x = 62,339,480,842.24
  5. Step 5: Solve for x
    x = 62,339,480,842.24/281,401.60
  6. Step 6: Final answer
    x = 221,532.08

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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.