Home / 387,459.45-581,189.18-121,222.27

Finding the Fourth Proportional to 387,459.45, 581,189.18 and 121,222.27

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Solution

The fourth proportional to 387,459.45, 581,189.18 and 121,222.27 is: 181,833.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,459.45 : 581,189.18 = 121,222.27 : x
  2. Step 2: Convert to fraction form
    387,459.45/581,189.18 = 121,222.27/x
  3. Step 3: Cross multiply
    387,459.45x = 581,189.18 × 121,222.27
  4. Step 4: Simplify right side
    387,459.45x = 70,453,071,819.41
  5. Step 5: Solve for x
    x = 70,453,071,819.41/387,459.45
  6. Step 6: Final answer
    x = 181,833.41

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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.