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Finding the Fourth Proportional to 387,659.12, 581,488.69 and 177,149.44

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Solution

The fourth proportional to 387,659.12, 581,488.69 and 177,149.44 is: 265,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,659.12 : 581,488.69 = 177,149.44 : x
  2. Step 2: Convert to fraction form
    387,659.12/581,488.69 = 177,149.44/x
  3. Step 3: Cross multiply
    387,659.12x = 581,488.69 × 177,149.44
  4. Step 4: Simplify right side
    387,659.12x = 103,010,393,903.24
  5. Step 5: Solve for x
    x = 103,010,393,903.24/387,659.12
  6. Step 6: Final answer
    x = 265,724.16

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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.