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Finding the Fourth Proportional to 395,180.08, 592,472 and 128,781.52

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Solution

The fourth proportional to 395,180.08, 592,472 and 128,781.52 is: 193,075.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,180.08 : 592,472 = 128,781.52 : x
  2. Step 2: Convert to fraction form
    395,180.08/592,472 = 128,781.52/x
  3. Step 3: Cross multiply
    395,180.08x = 592,472 × 128,781.52
  4. Step 4: Simplify right side
    395,180.08x = 76,299,444,717.44
  5. Step 5: Solve for x
    x = 76,299,444,717.44/395,180.08
  6. Step 6: Final answer
    x = 193,075.13

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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.