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Finding the Fourth Proportional to 328,315, 492,537.30 and 103,710.10

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Solution

The fourth proportional to 328,315, 492,537.30 and 103,710.10 is: 155,585.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,315 : 492,537.30 = 103,710.10 : x
  2. Step 2: Convert to fraction form
    328,315/492,537.30 = 103,710.10/x
  3. Step 3: Cross multiply
    328,315x = 492,537.30 × 103,710.10
  4. Step 4: Simplify right side
    328,315x = 51,081,092,636.73
  5. Step 5: Solve for x
    x = 51,081,092,636.73/328,315
  6. Step 6: Final answer
    x = 155,585.62

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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.