Home / 407,140.35-561,857.06-225,864.15

Finding the Fourth Proportional to 407,140.35, 561,857.06 and 225,864.15

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Solution

The fourth proportional to 407,140.35, 561,857.06 and 225,864.15 is: 311,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,140.35 : 561,857.06 = 225,864.15 : x
  2. Step 2: Convert to fraction form
    407,140.35/561,857.06 = 225,864.15/x
  3. Step 3: Cross multiply
    407,140.35x = 561,857.06 × 225,864.15
  4. Step 4: Simplify right side
    407,140.35x = 126,903,366,149.08
  5. Step 5: Solve for x
    x = 126,903,366,149.08/407,140.35
  6. Step 6: Final answer
    x = 311,694.40

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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.