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Finding the Fourth Proportional to 615,165.28, 848,934.48 and 343,257.76

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Solution

The fourth proportional to 615,165.28, 848,934.48 and 343,257.76 is: 473,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,165.28 : 848,934.48 = 343,257.76 : x
  2. Step 2: Convert to fraction form
    615,165.28/848,934.48 = 343,257.76/x
  3. Step 3: Cross multiply
    615,165.28x = 848,934.48 × 343,257.76
  4. Step 4: Simplify right side
    615,165.28x = 291,403,347,991.57
  5. Step 5: Solve for x
    x = 291,403,347,991.57/615,165.28
  6. Step 6: Final answer
    x = 473,699.28

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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.