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Finding the Fourth Proportional to 490,739.59, 736,109.56 and 153,806.39

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Solution

The fourth proportional to 490,739.59, 736,109.56 and 153,806.39 is: 230,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,739.59 : 736,109.56 = 153,806.39 : x
  2. Step 2: Convert to fraction form
    490,739.59/736,109.56 = 153,806.39/x
  3. Step 3: Cross multiply
    490,739.59x = 736,109.56 × 153,806.39
  4. Step 4: Simplify right side
    490,739.59x = 113,218,354,068.09
  5. Step 5: Solve for x
    x = 113,218,354,068.09/490,739.59
  6. Step 6: Final answer
    x = 230,709.64

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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.