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Finding the Fourth Proportional to 205,708.56, 308,597.40 and 65,510.16

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Solution

The fourth proportional to 205,708.56, 308,597.40 and 65,510.16 is: 98,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,708.56 : 308,597.40 = 65,510.16 : x
  2. Step 2: Convert to fraction form
    205,708.56/308,597.40 = 65,510.16/x
  3. Step 3: Cross multiply
    205,708.56x = 308,597.40 × 65,510.16
  4. Step 4: Simplify right side
    205,708.56x = 20,216,265,049.58
  5. Step 5: Solve for x
    x = 20,216,265,049.58/205,708.56
  6. Step 6: Final answer
    x = 98,276.25

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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.