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Finding the Fourth Proportional to 328,340.39, 492,510.68 and 79,022.39

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Solution

The fourth proportional to 328,340.39, 492,510.68 and 79,022.39 is: 118,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,340.39 : 492,510.68 = 79,022.39 : x
  2. Step 2: Convert to fraction form
    328,340.39/492,510.68 = 79,022.39/x
  3. Step 3: Cross multiply
    328,340.39x = 492,510.68 × 79,022.39
  4. Step 4: Simplify right side
    328,340.39x = 38,919,371,034.13
  5. Step 5: Solve for x
    x = 38,919,371,034.13/328,340.39
  6. Step 6: Final answer
    x = 118,533.61

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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.