Home / 389,107.13-583,678.60-119,215.94

Finding the Fourth Proportional to 389,107.13, 583,678.60 and 119,215.94

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Solution

The fourth proportional to 389,107.13, 583,678.60 and 119,215.94 is: 178,829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,107.13 : 583,678.60 = 119,215.94 : x
  2. Step 2: Convert to fraction form
    389,107.13/583,678.60 = 119,215.94/x
  3. Step 3: Cross multiply
    389,107.13x = 583,678.60 × 119,215.94
  4. Step 4: Simplify right side
    389,107.13x = 69,583,789,740.45
  5. Step 5: Solve for x
    x = 69,583,789,740.45/389,107.13
  6. Step 6: Final answer
    x = 178,829.39

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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.