Home / 406,988.75-561,644.48-228,140.75

Finding the Fourth Proportional to 406,988.75, 561,644.48 and 228,140.75

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Solution

The fourth proportional to 406,988.75, 561,644.48 and 228,140.75 is: 314,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,988.75 : 561,644.48 = 228,140.75 : x
  2. Step 2: Convert to fraction form
    406,988.75/561,644.48 = 228,140.75/x
  3. Step 3: Cross multiply
    406,988.75x = 561,644.48 × 228,140.75
  4. Step 4: Simplify right side
    406,988.75x = 128,133,992,900.56
  5. Step 5: Solve for x
    x = 128,133,992,900.56/406,988.75
  6. Step 6: Final answer
    x = 314,834.24

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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.