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Finding the Fourth Proportional to 240,139.09, 360,208.63 and 90,412.97

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Solution

The fourth proportional to 240,139.09, 360,208.63 and 90,412.97 is: 135,619.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,139.09 : 360,208.63 = 90,412.97 : x
  2. Step 2: Convert to fraction form
    240,139.09/360,208.63 = 90,412.97/x
  3. Step 3: Cross multiply
    240,139.09x = 360,208.63 × 90,412.97
  4. Step 4: Simplify right side
    240,139.09x = 32,567,529,804.82
  5. Step 5: Solve for x
    x = 32,567,529,804.82/240,139.09
  6. Step 6: Final answer
    x = 135,619.45

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1.5x scale

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.