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Finding the Fourth Proportional to 229,007.81, 316,015.07 and 127,029.21

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Solution

The fourth proportional to 229,007.81, 316,015.07 and 127,029.21 is: 175,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,007.81 : 316,015.07 = 127,029.21 : x
  2. Step 2: Convert to fraction form
    229,007.81/316,015.07 = 127,029.21/x
  3. Step 3: Cross multiply
    229,007.81x = 316,015.07 × 127,029.21
  4. Step 4: Simplify right side
    229,007.81x = 40,143,144,055.05
  5. Step 5: Solve for x
    x = 40,143,144,055.05/229,007.81
  6. Step 6: Final answer
    x = 175,291.60

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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.