Home / 387,781.20-581,477.40-177,181.20

Finding the Fourth Proportional to 387,781.20, 581,477.40 and 177,181.20

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Solution

The fourth proportional to 387,781.20, 581,477.40 and 177,181.20 is: 265,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,781.20 : 581,477.40 = 177,181.20 : x
  2. Step 2: Convert to fraction form
    387,781.20/581,477.40 = 177,181.20/x
  3. Step 3: Cross multiply
    387,781.20x = 581,477.40 × 177,181.20
  4. Step 4: Simplify right side
    387,781.20x = 103,026,863,504.88
  5. Step 5: Solve for x
    x = 103,026,863,504.88/387,781.20
  6. Step 6: Final answer
    x = 265,682.98

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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.