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Finding the Fourth Proportional to 305,305.56, 458,000.07 and 105,572.34

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Solution

The fourth proportional to 305,305.56, 458,000.07 and 105,572.34 is: 158,372.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,305.56 : 458,000.07 = 105,572.34 : x
  2. Step 2: Convert to fraction form
    305,305.56/458,000.07 = 105,572.34/x
  3. Step 3: Cross multiply
    305,305.56x = 458,000.07 × 105,572.34
  4. Step 4: Simplify right side
    305,305.56x = 48,352,139,110.06
  5. Step 5: Solve for x
    x = 48,352,139,110.06/305,305.56
  6. Step 6: Final answer
    x = 158,372.94

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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.