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Finding the Fourth Proportional to 328,658.78, 492,988.19 and 107,042.78

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Solution

The fourth proportional to 328,658.78, 492,988.19 and 107,042.78 is: 160,564.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,658.78 : 492,988.19 = 107,042.78 : x
  2. Step 2: Convert to fraction form
    328,658.78/492,988.19 = 107,042.78/x
  3. Step 3: Cross multiply
    328,658.78x = 492,988.19 × 107,042.78
  4. Step 4: Simplify right side
    328,658.78x = 52,770,826,364.77
  5. Step 5: Solve for x
    x = 52,770,826,364.77/328,658.78
  6. Step 6: Final answer
    x = 160,564.18

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1.5x scale

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.