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Finding the Fourth Proportional to 615,204.20, 921,812.70 and 348,170.60

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Solution

The fourth proportional to 615,204.20, 921,812.70 and 348,170.60 is: 521,693.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,204.20 : 921,812.70 = 348,170.60 : x
  2. Step 2: Convert to fraction form
    615,204.20/921,812.70 = 348,170.60/x
  3. Step 3: Cross multiply
    615,204.20x = 921,812.70 × 348,170.60
  4. Step 4: Simplify right side
    615,204.20x = 320,948,080,846.62
  5. Step 5: Solve for x
    x = 320,948,080,846.62/615,204.20
  6. Step 6: Final answer
    x = 521,693.58

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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.