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Finding the Fourth Proportional to 369,480.96, 553,708.80 and 211,374.72

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Solution

The fourth proportional to 369,480.96, 553,708.80 and 211,374.72 is: 316,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,480.96 : 553,708.80 = 211,374.72 : x
  2. Step 2: Convert to fraction form
    369,480.96/553,708.80 = 211,374.72/x
  3. Step 3: Cross multiply
    369,480.96x = 553,708.80 × 211,374.72
  4. Step 4: Simplify right side
    369,480.96x = 117,040,042,561.54
  5. Step 5: Solve for x
    x = 117,040,042,561.54/369,480.96
  6. Step 6: Final answer
    x = 316,768.81

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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.