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Finding the Fourth Proportional to 229,145.90, 316,220.90 and 127,172.57

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Solution

The fourth proportional to 229,145.90, 316,220.90 and 127,172.57 is: 175,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,145.90 : 316,220.90 = 127,172.57 : x
  2. Step 2: Convert to fraction form
    229,145.90/316,220.90 = 127,172.57/x
  3. Step 3: Cross multiply
    229,145.90x = 316,220.90 × 127,172.57
  4. Step 4: Simplify right side
    229,145.90x = 40,214,622,323.75
  5. Step 5: Solve for x
    x = 40,214,622,323.75/229,145.90
  6. Step 6: Final answer
    x = 175,497.90

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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.