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Finding the Fourth Proportional to 516,739.82, 775,059.60 and 156,913.78

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Solution

The fourth proportional to 516,739.82, 775,059.60 and 156,913.78 is: 235,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,739.82 : 775,059.60 = 156,913.78 : x
  2. Step 2: Convert to fraction form
    516,739.82/775,059.60 = 156,913.78/x
  3. Step 3: Cross multiply
    516,739.82x = 775,059.60 × 156,913.78
  4. Step 4: Simplify right side
    516,739.82x = 121,617,531,561.29
  5. Step 5: Solve for x
    x = 121,617,531,561.29/516,739.82
  6. Step 6: Final answer
    x = 235,355.45

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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.