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Finding the Fourth Proportional to 205,720.67, 308,501.23 and 70,759.07

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Solution

The fourth proportional to 205,720.67, 308,501.23 and 70,759.07 is: 106,111.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,720.67 : 308,501.23 = 70,759.07 : x
  2. Step 2: Convert to fraction form
    205,720.67/308,501.23 = 70,759.07/x
  3. Step 3: Cross multiply
    205,720.67x = 308,501.23 × 70,759.07
  4. Step 4: Simplify right side
    205,720.67x = 21,829,260,128.66
  5. Step 5: Solve for x
    x = 21,829,260,128.66/205,720.67
  6. Step 6: Final answer
    x = 106,111.17

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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.