Home / 205,311.40-307,938.30-65,084.20

Finding the Fourth Proportional to 205,311.40, 307,938.30 and 65,084.20

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Solution

The fourth proportional to 205,311.40, 307,938.30 and 65,084.20 is: 97,617.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,311.40 : 307,938.30 = 65,084.20 : x
  2. Step 2: Convert to fraction form
    205,311.40/307,938.30 = 65,084.20/x
  3. Step 3: Cross multiply
    205,311.40x = 307,938.30 × 65,084.20
  4. Step 4: Simplify right side
    205,311.40x = 20,041,917,904.86
  5. Step 5: Solve for x
    x = 20,041,917,904.86/205,311.40
  6. Step 6: Final answer
    x = 97,617.17

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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.