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Finding the Fourth Proportional to 385,103.92, 577,602.42 and 118,873.12

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Solution

The fourth proportional to 385,103.92, 577,602.42 and 118,873.12 is: 178,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,103.92 : 577,602.42 = 118,873.12 : x
  2. Step 2: Convert to fraction form
    385,103.92/577,602.42 = 118,873.12/x
  3. Step 3: Cross multiply
    385,103.92x = 577,602.42 × 118,873.12
  4. Step 4: Simplify right side
    385,103.92x = 68,661,401,784.95
  5. Step 5: Solve for x
    x = 68,661,401,784.95/385,103.92
  6. Step 6: Final answer
    x = 178,293.18

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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.