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Finding the Fourth Proportional to 469,890.62, 648,442.77 and 255,028.80

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Solution

The fourth proportional to 469,890.62, 648,442.77 and 255,028.80 is: 351,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,890.62 : 648,442.77 = 255,028.80 : x
  2. Step 2: Convert to fraction form
    469,890.62/648,442.77 = 255,028.80/x
  3. Step 3: Cross multiply
    469,890.62x = 648,442.77 × 255,028.80
  4. Step 4: Simplify right side
    469,890.62x = 165,371,582,977.08
  5. Step 5: Solve for x
    x = 165,371,582,977.08/469,890.62
  6. Step 6: Final answer
    x = 351,936.34

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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.