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Finding the Fourth Proportional to 395,178.58, 592,829.38 and 128,877

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Solution

The fourth proportional to 395,178.58, 592,829.38 and 128,877 is: 193,335.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,178.58 : 592,829.38 = 128,877 : x
  2. Step 2: Convert to fraction form
    395,178.58/592,829.38 = 128,877/x
  3. Step 3: Cross multiply
    395,178.58x = 592,829.38 × 128,877
  4. Step 4: Simplify right side
    395,178.58x = 76,402,072,006.26
  5. Step 5: Solve for x
    x = 76,402,072,006.26/395,178.58
  6. Step 6: Final answer
    x = 193,335.56

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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.