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Finding the Fourth Proportional to 519,409.80, 779,187.60 and 164,386.80

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Solution

The fourth proportional to 519,409.80, 779,187.60 and 164,386.80 is: 246,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,409.80 : 779,187.60 = 164,386.80 : x
  2. Step 2: Convert to fraction form
    519,409.80/779,187.60 = 164,386.80/x
  3. Step 3: Cross multiply
    519,409.80x = 779,187.60 × 164,386.80
  4. Step 4: Simplify right side
    519,409.80x = 128,088,156,163.68
  5. Step 5: Solve for x
    x = 128,088,156,163.68/519,409.80
  6. Step 6: Final answer
    x = 246,603.27

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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.