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Finding the Fourth Proportional to 380,578.73, 570,934.08 and 127,883.89

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Solution

The fourth proportional to 380,578.73, 570,934.08 and 127,883.89 is: 191,848.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,578.73 : 570,934.08 = 127,883.89 : x
  2. Step 2: Convert to fraction form
    380,578.73/570,934.08 = 127,883.89/x
  3. Step 3: Cross multiply
    380,578.73x = 570,934.08 × 127,883.89
  4. Step 4: Simplify right side
    380,578.73x = 73,013,270,444.55
  5. Step 5: Solve for x
    x = 73,013,270,444.55/380,578.73
  6. Step 6: Final answer
    x = 191,848.01

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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.