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Finding the Fourth Proportional to 217,079,992.80, 325,525,510.80 and 71,457,285.60

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Solution

The fourth proportional to 217,079,992.80, 325,525,510.80 and 71,457,285.60 is: 107,154,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,079,992.80 : 325,525,510.80 = 71,457,285.60 : x
  2. Step 2: Convert to fraction form
    217,079,992.80/325,525,510.80 = 71,457,285.60/x
  3. Step 3: Cross multiply
    217,079,992.80x = 325,525,510.80 × 71,457,285.60
  4. Step 4: Simplify right side
    217,079,992.80x = 23,261,169,395,321,484
  5. Step 5: Solve for x
    x = 23,261,169,395,321,484/217,079,992.80
  6. Step 6: Final answer
    x = 107,154,828.48

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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.