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Finding the Fourth Proportional to 553,747.38, 830,667.90 and 154,388.49

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Solution

The fourth proportional to 553,747.38, 830,667.90 and 154,388.49 is: 231,595.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,747.38 : 830,667.90 = 154,388.49 : x
  2. Step 2: Convert to fraction form
    553,747.38/830,667.90 = 154,388.49/x
  3. Step 3: Cross multiply
    553,747.38x = 830,667.90 × 154,388.49
  4. Step 4: Simplify right side
    553,747.38x = 128,245,562,772.47
  5. Step 5: Solve for x
    x = 128,245,562,772.47/553,747.38
  6. Step 6: Final answer
    x = 231,595.79

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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.