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Finding the Fourth Proportional to 578,223.39, 866,836.22 and 278,291.33

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Solution

The fourth proportional to 578,223.39, 866,836.22 and 278,291.33 is: 417,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,223.39 : 866,836.22 = 278,291.33 : x
  2. Step 2: Convert to fraction form
    578,223.39/866,836.22 = 278,291.33/x
  3. Step 3: Cross multiply
    578,223.39x = 866,836.22 × 278,291.33
  4. Step 4: Simplify right side
    578,223.39x = 241,232,998,830.34
  5. Step 5: Solve for x
    x = 241,232,998,830.34/578,223.39
  6. Step 6: Final answer
    x = 417,196.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.