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Finding the Fourth Proportional to 225,825.65, 311,639.40 and 125,223.65

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Solution

The fourth proportional to 225,825.65, 311,639.40 and 125,223.65 is: 172,808.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,825.65 : 311,639.40 = 125,223.65 : x
  2. Step 2: Convert to fraction form
    225,825.65/311,639.40 = 125,223.65/x
  3. Step 3: Cross multiply
    225,825.65x = 311,639.40 × 125,223.65
  4. Step 4: Simplify right side
    225,825.65x = 39,024,623,151.81
  5. Step 5: Solve for x
    x = 39,024,623,151.81/225,825.65
  6. Step 6: Final answer
    x = 172,808.64

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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.