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Finding the Fourth Proportional to 553,986.78, 830,162.73 and 253,726.62

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Solution

The fourth proportional to 553,986.78, 830,162.73 and 253,726.62 is: 380,215.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,986.78 : 830,162.73 = 253,726.62 : x
  2. Step 2: Convert to fraction form
    553,986.78/830,162.73 = 253,726.62/x
  3. Step 3: Cross multiply
    553,986.78x = 830,162.73 × 253,726.62
  4. Step 4: Simplify right side
    553,986.78x = 210,634,383,532.87
  5. Step 5: Solve for x
    x = 210,634,383,532.87/553,986.78
  6. Step 6: Final answer
    x = 380,215.54

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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.