Home / 407,000.12-561,660.33-225,714.20

Finding the Fourth Proportional to 407,000.12, 561,660.33 and 225,714.20

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Solution

The fourth proportional to 407,000.12, 561,660.33 and 225,714.20 is: 311,485.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,000.12 : 561,660.33 = 225,714.20 : x
  2. Step 2: Convert to fraction form
    407,000.12/561,660.33 = 225,714.20/x
  3. Step 3: Cross multiply
    407,000.12x = 561,660.33 × 225,714.20
  4. Step 4: Simplify right side
    407,000.12x = 126,774,712,057.69
  5. Step 5: Solve for x
    x = 126,774,712,057.69/407,000.12
  6. Step 6: Final answer
    x = 311,485.69

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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.