Home / 205,087.80-307,631.70-155,321.40

Finding the Fourth Proportional to 205,087.80, 307,631.70 and 155,321.40

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Solution

The fourth proportional to 205,087.80, 307,631.70 and 155,321.40 is: 232,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,087.80 : 307,631.70 = 155,321.40 : x
  2. Step 2: Convert to fraction form
    205,087.80/307,631.70 = 155,321.40/x
  3. Step 3: Cross multiply
    205,087.80x = 307,631.70 × 155,321.40
  4. Step 4: Simplify right side
    205,087.80x = 47,781,786,328.38
  5. Step 5: Solve for x
    x = 47,781,786,328.38/205,087.80
  6. Step 6: Final answer
    x = 232,982.10

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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.