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Finding the Fourth Proportional to 328,506.80, 492,760.20 and 118,117.40

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Solution

The fourth proportional to 328,506.80, 492,760.20 and 118,117.40 is: 177,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,506.80 : 492,760.20 = 118,117.40 : x
  2. Step 2: Convert to fraction form
    328,506.80/492,760.20 = 118,117.40/x
  3. Step 3: Cross multiply
    328,506.80x = 492,760.20 × 118,117.40
  4. Step 4: Simplify right side
    328,506.80x = 58,203,553,647.48
  5. Step 5: Solve for x
    x = 58,203,553,647.48/328,506.80
  6. Step 6: Final answer
    x = 177,176.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.