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Finding the Fourth Proportional to 344,557.60, 515,961.60 and 328,811.20

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Solution

The fourth proportional to 344,557.60, 515,961.60 and 328,811.20 is: 492,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,557.60 : 515,961.60 = 328,811.20 : x
  2. Step 2: Convert to fraction form
    344,557.60/515,961.60 = 328,811.20/x
  3. Step 3: Cross multiply
    344,557.60x = 515,961.60 × 328,811.20
  4. Step 4: Simplify right side
    344,557.60x = 169,653,952,849.92
  5. Step 5: Solve for x
    x = 169,653,952,849.92/344,557.60
  6. Step 6: Final answer
    x = 492,381.98

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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.