Home / 407,013.15-561,712.65-225,783.47

Finding the Fourth Proportional to 407,013.15, 561,712.65 and 225,783.47

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Solution

The fourth proportional to 407,013.15, 561,712.65 and 225,783.47 is: 311,600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,013.15 : 561,712.65 = 225,783.47 : x
  2. Step 2: Convert to fraction form
    407,013.15/561,712.65 = 225,783.47/x
  3. Step 3: Cross multiply
    407,013.15x = 561,712.65 × 225,783.47
  4. Step 4: Simplify right side
    407,013.15x = 126,825,430,130.98
  5. Step 5: Solve for x
    x = 126,825,430,130.98/407,013.15
  6. Step 6: Final answer
    x = 311,600.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.