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Finding the Fourth Proportional to 258,305.76, 387,514.94 and 108,460.62

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Solution

The fourth proportional to 258,305.76, 387,514.94 and 108,460.62 is: 162,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,305.76 : 387,514.94 = 108,460.62 : x
  2. Step 2: Convert to fraction form
    258,305.76/387,514.94 = 108,460.62/x
  3. Step 3: Cross multiply
    258,305.76x = 387,514.94 × 108,460.62
  4. Step 4: Simplify right side
    258,305.76x = 42,030,110,109.36
  5. Step 5: Solve for x
    x = 42,030,110,109.36/258,305.76
  6. Step 6: Final answer
    x = 162,714.57

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1.5x scale

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.