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Finding the Fourth Proportional to 449,448.16, 620,271.12 and 258,521.44

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Solution

The fourth proportional to 449,448.16, 620,271.12 and 258,521.44 is: 356,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,448.16 : 620,271.12 = 258,521.44 : x
  2. Step 2: Convert to fraction form
    449,448.16/620,271.12 = 258,521.44/x
  3. Step 3: Cross multiply
    449,448.16x = 620,271.12 × 258,521.44
  4. Step 4: Simplify right side
    449,448.16x = 160,353,383,132.81
  5. Step 5: Solve for x
    x = 160,353,383,132.81/449,448.16
  6. Step 6: Final answer
    x = 356,778.37

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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.