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Finding the Fourth Proportional to 229,539.56, 316,794.15 and 128,957.00

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Solution

The fourth proportional to 229,539.56, 316,794.15 and 128,957.00 is: 177,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,539.56 : 316,794.15 = 128,957.00 : x
  2. Step 2: Convert to fraction form
    229,539.56/316,794.15 = 128,957.00/x
  3. Step 3: Cross multiply
    229,539.56x = 316,794.15 × 128,957.00
  4. Step 4: Simplify right side
    229,539.56x = 40,852,821,617.58
  5. Step 5: Solve for x
    x = 40,852,821,617.58/229,539.56
  6. Step 6: Final answer
    x = 177,977.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.