Home / 407,228,359.50-561,970,412.19-221,586,176.70

Finding the Fourth Proportional to 407,228,359.50, 561,970,412.19 and 221,586,176.70

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Solution

The fourth proportional to 407,228,359.50, 561,970,412.19 and 221,586,176.70 is: 305,786,353.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,228,359.50 : 561,970,412.19 = 221,586,176.70 : x
  2. Step 2: Convert to fraction form
    407,228,359.50/561,970,412.19 = 221,586,176.70/x
  3. Step 3: Cross multiply
    407,228,359.50x = 561,970,412.19 × 221,586,176.70
  4. Step 4: Simplify right side
    407,228,359.50x = 124,524,875,055,705,184
  5. Step 5: Solve for x
    x = 124,524,875,055,705,184/407,228,359.50
  6. Step 6: Final answer
    x = 305,786,353.41

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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.