Home / 387,763.96-581,629.46-121,518.60

Finding the Fourth Proportional to 387,763.96, 581,629.46 and 121,518.60

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Solution

The fourth proportional to 387,763.96, 581,629.46 and 121,518.60 is: 182,272.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,763.96 : 581,629.46 = 121,518.60 : x
  2. Step 2: Convert to fraction form
    387,763.96/581,629.46 = 121,518.60/x
  3. Step 3: Cross multiply
    387,763.96x = 581,629.46 × 121,518.60
  4. Step 4: Simplify right side
    387,763.96x = 70,678,797,697.96
  5. Step 5: Solve for x
    x = 70,678,797,697.96/387,763.96
  6. Step 6: Final answer
    x = 182,272.74

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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.