Home / 387,798.12-581,680.26-121,552.56

Finding the Fourth Proportional to 387,798.12, 581,680.26 and 121,552.56

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Solution

The fourth proportional to 387,798.12, 581,680.26 and 121,552.56 is: 182,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,798.12 : 581,680.26 = 121,552.56 : x
  2. Step 2: Convert to fraction form
    387,798.12/581,680.26 = 121,552.56/x
  3. Step 3: Cross multiply
    387,798.12x = 581,680.26 × 121,552.56
  4. Step 4: Simplify right side
    387,798.12x = 70,704,724,704.47
  5. Step 5: Solve for x
    x = 70,704,724,704.47/387,798.12
  6. Step 6: Final answer
    x = 182,323.54

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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.