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Finding the Fourth Proportional to 449,381.16, 620,118.55 and 245,390.63

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Solution

The fourth proportional to 449,381.16, 620,118.55 and 245,390.63 is: 338,624.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,381.16 : 620,118.55 = 245,390.63 : x
  2. Step 2: Convert to fraction form
    449,381.16/620,118.55 = 245,390.63/x
  3. Step 3: Cross multiply
    449,381.16x = 620,118.55 × 245,390.63
  4. Step 4: Simplify right side
    449,381.16x = 152,171,278,865.33
  5. Step 5: Solve for x
    x = 152,171,278,865.33/449,381.16
  6. Step 6: Final answer
    x = 338,624.07

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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.