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Finding the Fourth Proportional to 240,139.08, 360,208.63 and 90,412.96

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Solution

The fourth proportional to 240,139.08, 360,208.63 and 90,412.96 is: 135,619.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,139.08 : 360,208.63 = 90,412.96 : x
  2. Step 2: Convert to fraction form
    240,139.08/360,208.63 = 90,412.96/x
  3. Step 3: Cross multiply
    240,139.08x = 360,208.63 × 90,412.96
  4. Step 4: Simplify right side
    240,139.08x = 32,567,528,455.84
  5. Step 5: Solve for x
    x = 32,567,528,455.84/240,139.08
  6. Step 6: Final answer
    x = 135,619.44

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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.