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Finding the Fourth Proportional to 299,549.78, 449,328.65 and 99,870.23

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Solution

The fourth proportional to 299,549.78, 449,328.65 and 99,870.23 is: 149,806.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,549.78 : 449,328.65 = 99,870.23 : x
  2. Step 2: Convert to fraction form
    299,549.78/449,328.65 = 99,870.23/x
  3. Step 3: Cross multiply
    299,549.78x = 449,328.65 × 99,870.23
  4. Step 4: Simplify right side
    299,549.78x = 44,874,556,525.95
  5. Step 5: Solve for x
    x = 44,874,556,525.95/299,549.78
  6. Step 6: Final answer
    x = 149,806.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.