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Finding the Fourth Proportional to 385,017.72, 577,580.86 and 118,799.88

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Solution

The fourth proportional to 385,017.72, 577,580.86 and 118,799.88 is: 178,216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,017.72 : 577,580.86 = 118,799.88 : x
  2. Step 2: Convert to fraction form
    385,017.72/577,580.86 = 118,799.88/x
  3. Step 3: Cross multiply
    385,017.72x = 577,580.86 × 118,799.88
  4. Step 4: Simplify right side
    385,017.72x = 68,616,536,858.30
  5. Step 5: Solve for x
    x = 68,616,536,858.30/385,017.72
  6. Step 6: Final answer
    x = 178,216.57

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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.