Home / 205,298.60-307,947.90-145,812.20

Finding the Fourth Proportional to 205,298.60, 307,947.90 and 145,812.20

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Solution

The fourth proportional to 205,298.60, 307,947.90 and 145,812.20 is: 218,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,298.60 : 307,947.90 = 145,812.20 : x
  2. Step 2: Convert to fraction form
    205,298.60/307,947.90 = 145,812.20/x
  3. Step 3: Cross multiply
    205,298.60x = 307,947.90 × 145,812.20
  4. Step 4: Simplify right side
    205,298.60x = 44,902,560,784.38
  5. Step 5: Solve for x
    x = 44,902,560,784.38/205,298.60
  6. Step 6: Final answer
    x = 218,718.30

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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.