Home / 205,480.16-307,747.20-105,394.40

Finding the Fourth Proportional to 205,480.16, 307,747.20 and 105,394.40

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Solution

The fourth proportional to 205,480.16, 307,747.20 and 105,394.40 is: 157,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,480.16 : 307,747.20 = 105,394.40 : x
  2. Step 2: Convert to fraction form
    205,480.16/307,747.20 = 105,394.40/x
  3. Step 3: Cross multiply
    205,480.16x = 307,747.20 × 105,394.40
  4. Step 4: Simplify right side
    205,480.16x = 32,434,831,495.68
  5. Step 5: Solve for x
    x = 32,434,831,495.68/205,480.16
  6. Step 6: Final answer
    x = 157,848.97

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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.