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Finding the Fourth Proportional to 229,029.30, 316,025.91 and 130,905.45

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Solution

The fourth proportional to 229,029.30, 316,025.91 and 130,905.45 is: 180,629.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,029.30 : 316,025.91 = 130,905.45 : x
  2. Step 2: Convert to fraction form
    229,029.30/316,025.91 = 130,905.45/x
  3. Step 3: Cross multiply
    229,029.30x = 316,025.91 × 130,905.45
  4. Step 4: Simplify right side
    229,029.30x = 41,369,513,960.21
  5. Step 5: Solve for x
    x = 41,369,513,960.21/229,029.30
  6. Step 6: Final answer
    x = 180,629.79

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1.5x scale

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.