Home / 406,685.21-561,225.65-225,408.83

Finding the Fourth Proportional to 406,685.21, 561,225.65 and 225,408.83

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Solution

The fourth proportional to 406,685.21, 561,225.65 and 225,408.83 is: 311,064.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,685.21 : 561,225.65 = 225,408.83 : x
  2. Step 2: Convert to fraction form
    406,685.21/561,225.65 = 225,408.83/x
  3. Step 3: Cross multiply
    406,685.21x = 561,225.65 × 225,408.83
  4. Step 4: Simplify right side
    406,685.21x = 126,505,217,132.49
  5. Step 5: Solve for x
    x = 126,505,217,132.49/406,685.21
  6. Step 6: Final answer
    x = 311,064.22

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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.