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Finding the Fourth Proportional to 328,617.25, 492,925.92 and 79,299.25

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Solution

The fourth proportional to 328,617.25, 492,925.92 and 79,299.25 is: 118,948.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,617.25 : 492,925.92 = 79,299.25 : x
  2. Step 2: Convert to fraction form
    328,617.25/492,925.92 = 79,299.25/x
  3. Step 3: Cross multiply
    328,617.25x = 492,925.92 × 79,299.25
  4. Step 4: Simplify right side
    328,617.25x = 39,088,655,761.56
  5. Step 5: Solve for x
    x = 39,088,655,761.56/328,617.25
  6. Step 6: Final answer
    x = 118,948.89

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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.