Home / 406,985.28-561,639.72-225,724.92

Finding the Fourth Proportional to 406,985.28, 561,639.72 and 225,724.92

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Solution

The fourth proportional to 406,985.28, 561,639.72 and 225,724.92 is: 311,500.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,985.28 : 561,639.72 = 225,724.92 : x
  2. Step 2: Convert to fraction form
    406,985.28/561,639.72 = 225,724.92/x
  3. Step 3: Cross multiply
    406,985.28x = 561,639.72 × 225,724.92
  4. Step 4: Simplify right side
    406,985.28x = 126,776,080,865.82
  5. Step 5: Solve for x
    x = 126,776,080,865.82/406,985.28
  6. Step 6: Final answer
    x = 311,500.41

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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.