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Finding the Fourth Proportional to 318,852.90, 440,019.81 and 175,617.90

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Solution

The fourth proportional to 318,852.90, 440,019.81 and 175,617.90 is: 242,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,852.90 : 440,019.81 = 175,617.90 : x
  2. Step 2: Convert to fraction form
    318,852.90/440,019.81 = 175,617.90/x
  3. Step 3: Cross multiply
    318,852.90x = 440,019.81 × 175,617.90
  4. Step 4: Simplify right side
    318,852.90x = 77,275,354,990.60
  5. Step 5: Solve for x
    x = 77,275,354,990.60/318,852.90
  6. Step 6: Final answer
    x = 242,354.25

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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.