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Finding the Fourth Proportional to 228,345.84, 315,112.26 and 124,979.54

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Solution

The fourth proportional to 228,345.84, 315,112.26 and 124,979.54 is: 172,469.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,345.84 : 315,112.26 = 124,979.54 : x
  2. Step 2: Convert to fraction form
    228,345.84/315,112.26 = 124,979.54/x
  3. Step 3: Cross multiply
    228,345.84x = 315,112.26 × 124,979.54
  4. Step 4: Simplify right side
    228,345.84x = 39,382,585,303.16
  5. Step 5: Solve for x
    x = 39,382,585,303.16/228,345.84
  6. Step 6: Final answer
    x = 172,469.03

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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.