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Finding the Fourth Proportional to 225,615.84, 311,348.64 and 125,013.60

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Solution

The fourth proportional to 225,615.84, 311,348.64 and 125,013.60 is: 172,518.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,615.84 : 311,348.64 = 125,013.60 : x
  2. Step 2: Convert to fraction form
    225,615.84/311,348.64 = 125,013.60/x
  3. Step 3: Cross multiply
    225,615.84x = 311,348.64 × 125,013.60
  4. Step 4: Simplify right side
    225,615.84x = 38,922,814,341.50
  5. Step 5: Solve for x
    x = 38,922,814,341.50/225,615.84
  6. Step 6: Final answer
    x = 172,518.09

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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.