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Finding the Fourth Proportional to 318,704.79, 439,804.08 and 175,465.92

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Solution

The fourth proportional to 318,704.79, 439,804.08 and 175,465.92 is: 242,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,704.79 : 439,804.08 = 175,465.92 : x
  2. Step 2: Convert to fraction form
    318,704.79/439,804.08 = 175,465.92/x
  3. Step 3: Cross multiply
    318,704.79x = 439,804.08 × 175,465.92
  4. Step 4: Simplify right side
    318,704.79x = 77,170,627,516.95
  5. Step 5: Solve for x
    x = 77,170,627,516.95/318,704.79
  6. Step 6: Final answer
    x = 242,138.27

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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.