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Finding the Fourth Proportional to 449,505.60, 620,336.54 and 258,519.12

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Solution

The fourth proportional to 449,505.60, 620,336.54 and 258,519.12 is: 356,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,505.60 : 620,336.54 = 258,519.12 : x
  2. Step 2: Convert to fraction form
    449,505.60/620,336.54 = 258,519.12/x
  3. Step 3: Cross multiply
    449,505.60x = 620,336.54 × 258,519.12
  4. Step 4: Simplify right side
    449,505.60x = 160,368,856,424.65
  5. Step 5: Solve for x
    x = 160,368,856,424.65/449,505.60
  6. Step 6: Final answer
    x = 356,767.20

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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.