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Finding the Fourth Proportional to 303,368.10, 455,052.15 and 103,640.33

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Solution

The fourth proportional to 303,368.10, 455,052.15 and 103,640.33 is: 155,460.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,368.10 : 455,052.15 = 103,640.33 : x
  2. Step 2: Convert to fraction form
    303,368.10/455,052.15 = 103,640.33/x
  3. Step 3: Cross multiply
    303,368.10x = 455,052.15 × 103,640.33
  4. Step 4: Simplify right side
    303,368.10x = 47,161,754,993.21
  5. Step 5: Solve for x
    x = 47,161,754,993.21/303,368.10
  6. Step 6: Final answer
    x = 155,460.50

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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.