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Finding the Fourth Proportional to 519,978.81, 779,869.58 and 253,471.29

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Solution

The fourth proportional to 519,978.81, 779,869.58 and 253,471.29 is: 380,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,978.81 : 779,869.58 = 253,471.29 : x
  2. Step 2: Convert to fraction form
    519,978.81/779,869.58 = 253,471.29/x
  3. Step 3: Cross multiply
    519,978.81x = 779,869.58 × 253,471.29
  4. Step 4: Simplify right side
    519,978.81x = 197,674,550,107.19
  5. Step 5: Solve for x
    x = 197,674,550,107.19/519,978.81
  6. Step 6: Final answer
    x = 380,158.86

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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.