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Finding the Fourth Proportional to 253,369.08, 380,080.32 and 103,585.56

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Solution

The fourth proportional to 253,369.08, 380,080.32 and 103,585.56 is: 155,389.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,369.08 : 380,080.32 = 103,585.56 : x
  2. Step 2: Convert to fraction form
    253,369.08/380,080.32 = 103,585.56/x
  3. Step 3: Cross multiply
    253,369.08x = 380,080.32 × 103,585.56
  4. Step 4: Simplify right side
    253,369.08x = 39,370,832,792.18
  5. Step 5: Solve for x
    x = 39,370,832,792.18/253,369.08
  6. Step 6: Final answer
    x = 155,389.26

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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.