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Finding the Fourth Proportional to 385,315.60, 577,896.60 and 185,635.60

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Solution

The fourth proportional to 385,315.60, 577,896.60 and 185,635.60 is: 278,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,315.60 : 577,896.60 = 185,635.60 : x
  2. Step 2: Convert to fraction form
    385,315.60/577,896.60 = 185,635.60/x
  3. Step 3: Cross multiply
    385,315.60x = 577,896.60 × 185,635.60
  4. Step 4: Simplify right side
    385,315.60x = 107,278,182,078.96
  5. Step 5: Solve for x
    x = 107,278,182,078.96/385,315.60
  6. Step 6: Final answer
    x = 278,416.40

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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.