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Finding the Fourth Proportional to 328,165.60, 492,318.06 and 103,590.94

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Solution

The fourth proportional to 328,165.60, 492,318.06 and 103,590.94 is: 155,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,165.60 : 492,318.06 = 103,590.94 : x
  2. Step 2: Convert to fraction form
    328,165.60/492,318.06 = 103,590.94/x
  3. Step 3: Cross multiply
    328,165.60x = 492,318.06 × 103,590.94
  4. Step 4: Simplify right side
    328,165.60x = 50,999,690,614.38
  5. Step 5: Solve for x
    x = 50,999,690,614.38/328,165.60
  6. Step 6: Final answer
    x = 155,408.40

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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.