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Finding the Fourth Proportional to 341,885.69, 512,848.60 and 128,655.41

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Solution

The fourth proportional to 341,885.69, 512,848.60 and 128,655.41 is: 192,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,885.69 : 512,848.60 = 128,655.41 : x
  2. Step 2: Convert to fraction form
    341,885.69/512,848.60 = 128,655.41/x
  3. Step 3: Cross multiply
    341,885.69x = 512,848.60 × 128,655.41
  4. Step 4: Simplify right side
    341,885.69x = 65,980,749,546.69
  5. Step 5: Solve for x
    x = 65,980,749,546.69/341,885.69
  6. Step 6: Final answer
    x = 192,990.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.