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Finding the Fourth Proportional to 318,877.43, 440,050.78 and 175,637.47

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Solution

The fourth proportional to 318,877.43, 440,050.78 and 175,637.47 is: 242,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,877.43 : 440,050.78 = 175,637.47 : x
  2. Step 2: Convert to fraction form
    318,877.43/440,050.78 = 175,637.47/x
  3. Step 3: Cross multiply
    318,877.43x = 440,050.78 × 175,637.47
  4. Step 4: Simplify right side
    318,877.43x = 77,289,404,792.54
  5. Step 5: Solve for x
    x = 77,289,404,792.54/318,877.43
  6. Step 6: Final answer
    x = 242,379.67

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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.