Home / 218,748.57-328,157.28-76,637.31

Finding the Fourth Proportional to 218,748.57, 328,157.28 and 76,637.31

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Solution

The fourth proportional to 218,748.57, 328,157.28 and 76,637.31 is: 114,968.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,748.57 : 328,157.28 = 76,637.31 : x
  2. Step 2: Convert to fraction form
    218,748.57/328,157.28 = 76,637.31/x
  3. Step 3: Cross multiply
    218,748.57x = 328,157.28 × 76,637.31
  4. Step 4: Simplify right side
    218,748.57x = 25,149,091,196.12
  5. Step 5: Solve for x
    x = 25,149,091,196.12/218,748.57
  6. Step 6: Final answer
    x = 114,968.03

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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.