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Finding the Fourth Proportional to 508,820.60, 702,167.53 and 279,375.89

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Solution

The fourth proportional to 508,820.60, 702,167.53 and 279,375.89 is: 385,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,820.60 : 702,167.53 = 279,375.89 : x
  2. Step 2: Convert to fraction form
    508,820.60/702,167.53 = 279,375.89/x
  3. Step 3: Cross multiply
    508,820.60x = 702,167.53 × 279,375.89
  4. Step 4: Simplify right side
    508,820.60x = 196,168,682,290.04
  5. Step 5: Solve for x
    x = 196,168,682,290.04/508,820.60
  6. Step 6: Final answer
    x = 385,536.05

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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.