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Finding the Fourth Proportional to 388,625.60, 538,749.08 and 367,338.88

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Solution

The fourth proportional to 388,625.60, 538,749.08 and 367,338.88 is: 509,239.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,625.60 : 538,749.08 = 367,338.88 : x
  2. Step 2: Convert to fraction form
    388,625.60/538,749.08 = 367,338.88/x
  3. Step 3: Cross multiply
    388,625.60x = 538,749.08 × 367,338.88
  4. Step 4: Simplify right side
    388,625.60x = 197,903,483,648.23
  5. Step 5: Solve for x
    x = 197,903,483,648.23/388,625.60
  6. Step 6: Final answer
    x = 509,239.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.