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Finding the Fourth Proportional to 229,352.64, 316,506.96 and 128,751.36

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Solution

The fourth proportional to 229,352.64, 316,506.96 and 128,751.36 is: 177,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,352.64 : 316,506.96 = 128,751.36 : x
  2. Step 2: Convert to fraction form
    229,352.64/316,506.96 = 128,751.36/x
  3. Step 3: Cross multiply
    229,352.64x = 316,506.96 × 128,751.36
  4. Step 4: Simplify right side
    229,352.64x = 40,750,701,549.47
  5. Step 5: Solve for x
    x = 40,750,701,549.47/229,352.64
  6. Step 6: Final answer
    x = 177,677.05

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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.