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Finding the Fourth Proportional to 538,155.09, 742,657.82 and 308,722.39

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Solution

The fourth proportional to 538,155.09, 742,657.82 and 308,722.39 is: 426,039.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,155.09 : 742,657.82 = 308,722.39 : x
  2. Step 2: Convert to fraction form
    538,155.09/742,657.82 = 308,722.39/x
  3. Step 3: Cross multiply
    538,155.09x = 742,657.82 × 308,722.39
  4. Step 4: Simplify right side
    538,155.09x = 229,275,093,742.33
  5. Step 5: Solve for x
    x = 229,275,093,742.33/538,155.09
  6. Step 6: Final answer
    x = 426,039.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.