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Finding the Fourth Proportional to 328,447.80, 492,629.27 and 103,830.93

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Solution

The fourth proportional to 328,447.80, 492,629.27 and 103,830.93 is: 155,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,447.80 : 492,629.27 = 103,830.93 : x
  2. Step 2: Convert to fraction form
    328,447.80/492,629.27 = 103,830.93/x
  3. Step 3: Cross multiply
    328,447.80x = 492,629.27 × 103,830.93
  4. Step 4: Simplify right side
    328,447.80x = 51,150,154,730.17
  5. Step 5: Solve for x
    x = 51,150,154,730.17/328,447.80
  6. Step 6: Final answer
    x = 155,732.98

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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.