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Finding the Fourth Proportional to 228,750.39, 315,599.88 and 138,071.91

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Solution

The fourth proportional to 228,750.39, 315,599.88 and 138,071.91 is: 190,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,750.39 : 315,599.88 = 138,071.91 : x
  2. Step 2: Convert to fraction form
    228,750.39/315,599.88 = 138,071.91/x
  3. Step 3: Cross multiply
    228,750.39x = 315,599.88 × 138,071.91
  4. Step 4: Simplify right side
    228,750.39x = 43,575,478,227.37
  5. Step 5: Solve for x
    x = 43,575,478,227.37/228,750.39
  6. Step 6: Final answer
    x = 190,493.57

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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.