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Finding the Fourth Proportional to 385,372.89, 577,812.69 and 185,294.79

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Solution

The fourth proportional to 385,372.89, 577,812.69 and 185,294.79 is: 277,823.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,372.89 : 577,812.69 = 185,294.79 : x
  2. Step 2: Convert to fraction form
    385,372.89/577,812.69 = 185,294.79/x
  3. Step 3: Cross multiply
    385,372.89x = 577,812.69 × 185,294.79
  4. Step 4: Simplify right side
    385,372.89x = 107,065,681,052.89
  5. Step 5: Solve for x
    x = 107,065,681,052.89/385,372.89
  6. Step 6: Final answer
    x = 277,823.59

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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.