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Finding the Fourth Proportional to 328,423.82, 492,632.75 and 103,784.29

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Solution

The fourth proportional to 328,423.82, 492,632.75 and 103,784.29 is: 155,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,423.82 : 492,632.75 = 103,784.29 : x
  2. Step 2: Convert to fraction form
    328,423.82/492,632.75 = 103,784.29/x
  3. Step 3: Cross multiply
    328,423.82x = 492,632.75 × 103,784.29
  4. Step 4: Simplify right side
    328,423.82x = 51,127,539,217.38
  5. Step 5: Solve for x
    x = 51,127,539,217.38/328,423.82
  6. Step 6: Final answer
    x = 155,675.49

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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.