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Finding the Fourth Proportional to 384,777.60, 577,166.40 and 118,619.70

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Solution

The fourth proportional to 384,777.60, 577,166.40 and 118,619.70 is: 177,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,777.60 : 577,166.40 = 118,619.70 : x
  2. Step 2: Convert to fraction form
    384,777.60/577,166.40 = 118,619.70/x
  3. Step 3: Cross multiply
    384,777.60x = 577,166.40 × 118,619.70
  4. Step 4: Simplify right side
    384,777.60x = 68,463,305,218.08
  5. Step 5: Solve for x
    x = 68,463,305,218.08/384,777.60
  6. Step 6: Final answer
    x = 177,929.55

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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.