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Finding the Fourth Proportional to 346,821.60, 520,232.40 and 262,840.80

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Solution

The fourth proportional to 346,821.60, 520,232.40 and 262,840.80 is: 394,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,821.60 : 520,232.40 = 262,840.80 : x
  2. Step 2: Convert to fraction form
    346,821.60/520,232.40 = 262,840.80/x
  3. Step 3: Cross multiply
    346,821.60x = 520,232.40 × 262,840.80
  4. Step 4: Simplify right side
    346,821.60x = 136,738,300,201.92
  5. Step 5: Solve for x
    x = 136,738,300,201.92/346,821.60
  6. Step 6: Final answer
    x = 394,261.20

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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.