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Finding the Fourth Proportional to 612,892.56, 919,486.08 and 192,168.48

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Solution

The fourth proportional to 612,892.56, 919,486.08 and 192,168.48 is: 288,298.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,892.56 : 919,486.08 = 192,168.48 : x
  2. Step 2: Convert to fraction form
    612,892.56/919,486.08 = 192,168.48/x
  3. Step 3: Cross multiply
    612,892.56x = 919,486.08 × 192,168.48
  4. Step 4: Simplify right side
    612,892.56x = 176,696,242,374.76
  5. Step 5: Solve for x
    x = 176,696,242,374.76/612,892.56
  6. Step 6: Final answer
    x = 288,298.89

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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.