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Finding the Fourth Proportional to 385,404.40, 577,847.40 and 205,519.60

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Solution

The fourth proportional to 385,404.40, 577,847.40 and 205,519.60 is: 308,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,404.40 : 577,847.40 = 205,519.60 : x
  2. Step 2: Convert to fraction form
    385,404.40/577,847.40 = 205,519.60/x
  3. Step 3: Cross multiply
    385,404.40x = 577,847.40 × 205,519.60
  4. Step 4: Simplify right side
    385,404.40x = 118,758,966,509.04
  5. Step 5: Solve for x
    x = 118,758,966,509.04/385,404.40
  6. Step 6: Final answer
    x = 308,141.18

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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.