Home / 407,015.09-561,715.33-225,785.42

Finding the Fourth Proportional to 407,015.09, 561,715.33 and 225,785.42

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Solution

The fourth proportional to 407,015.09, 561,715.33 and 225,785.42 is: 311,603.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,015.09 : 561,715.33 = 225,785.42 : x
  2. Step 2: Convert to fraction form
    407,015.09/561,715.33 = 225,785.42/x
  3. Step 3: Cross multiply
    407,015.09x = 561,715.33 × 225,785.42
  4. Step 4: Simplify right side
    407,015.09x = 126,827,128,331.45
  5. Step 5: Solve for x
    x = 126,827,128,331.45/407,015.09
  6. Step 6: Final answer
    x = 311,603.01

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1.5x scale

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.