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Finding the Fourth Proportional to 281,449.65, 388,401.10 and 152,389.52

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Solution

The fourth proportional to 281,449.65, 388,401.10 and 152,389.52 is: 210,297.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,449.65 : 388,401.10 = 152,389.52 : x
  2. Step 2: Convert to fraction form
    281,449.65/388,401.10 = 152,389.52/x
  3. Step 3: Cross multiply
    281,449.65x = 388,401.10 × 152,389.52
  4. Step 4: Simplify right side
    281,449.65x = 59,188,257,196.47
  5. Step 5: Solve for x
    x = 59,188,257,196.47/281,449.65
  6. Step 6: Final answer
    x = 210,297.85

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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.