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Finding the Fourth Proportional to 615,143.46, 848,896.81 and 343,195.18

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Solution

The fourth proportional to 615,143.46, 848,896.81 and 343,195.18 is: 473,608.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,143.46 : 848,896.81 = 343,195.18 : x
  2. Step 2: Convert to fraction form
    615,143.46/848,896.81 = 343,195.18/x
  3. Step 3: Cross multiply
    615,143.46x = 848,896.81 × 343,195.18
  4. Step 4: Simplify right side
    615,143.46x = 291,337,290,529.15
  5. Step 5: Solve for x
    x = 291,337,290,529.15/615,143.46
  6. Step 6: Final answer
    x = 473,608.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.