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Finding the Fourth Proportional to 615,143.72, 848,897.15 and 343,195.43

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Solution

The fourth proportional to 615,143.72, 848,897.15 and 343,195.43 is: 473,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,143.72 : 848,897.15 = 343,195.43 : x
  2. Step 2: Convert to fraction form
    615,143.72/848,897.15 = 343,195.43/x
  3. Step 3: Cross multiply
    615,143.72x = 848,897.15 × 343,195.43
  4. Step 4: Simplify right side
    615,143.72x = 291,337,621,155.77
  5. Step 5: Solve for x
    x = 291,337,621,155.77/615,143.72
  6. Step 6: Final answer
    x = 473,609.03

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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.