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Finding the Fourth Proportional to 318,907, 440,091.68 and 175,666.60

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Solution

The fourth proportional to 318,907, 440,091.68 and 175,666.60 is: 242,419.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,907 : 440,091.68 = 175,666.60 : x
  2. Step 2: Convert to fraction form
    318,907/440,091.68 = 175,666.60/x
  3. Step 3: Cross multiply
    318,907x = 440,091.68 × 175,666.60
  4. Step 4: Simplify right side
    318,907x = 77,309,409,113.89
  5. Step 5: Solve for x
    x = 77,309,409,113.89/318,907
  6. Step 6: Final answer
    x = 242,419.92

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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.