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Finding the Fourth Proportional to 389,129.67, 583,712.06 and 119,238.39

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Solution

The fourth proportional to 389,129.67, 583,712.06 and 119,238.39 is: 178,862.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,129.67 : 583,712.06 = 119,238.39 : x
  2. Step 2: Convert to fraction form
    389,129.67/583,712.06 = 119,238.39/x
  3. Step 3: Cross multiply
    389,129.67x = 583,712.06 × 119,238.39
  4. Step 4: Simplify right side
    389,129.67x = 69,600,885,661.79
  5. Step 5: Solve for x
    x = 69,600,885,661.79/389,129.67
  6. Step 6: Final answer
    x = 178,862.96

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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.