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Finding the Fourth Proportional to 519,371.86, 779,174.52 and 164,407.18

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Solution

The fourth proportional to 519,371.86, 779,174.52 and 164,407.18 is: 246,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,371.86 : 779,174.52 = 164,407.18 : x
  2. Step 2: Convert to fraction form
    519,371.86/779,174.52 = 164,407.18/x
  3. Step 3: Cross multiply
    519,371.86x = 779,174.52 × 164,407.18
  4. Step 4: Simplify right side
    519,371.86x = 128,101,885,561.05
  5. Step 5: Solve for x
    x = 128,101,885,561.05/519,371.86
  6. Step 6: Final answer
    x = 246,647.72

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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.