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Finding the Fourth Proportional to 395,072.64, 592,703.19 and 128,833.47

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Solution

The fourth proportional to 395,072.64, 592,703.19 and 128,833.47 is: 193,280.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,072.64 : 592,703.19 = 128,833.47 : x
  2. Step 2: Convert to fraction form
    395,072.64/592,703.19 = 128,833.47/x
  3. Step 3: Cross multiply
    395,072.64x = 592,703.19 × 128,833.47
  4. Step 4: Simplify right side
    395,072.64x = 76,360,008,647.77
  5. Step 5: Solve for x
    x = 76,360,008,647.77/395,072.64
  6. Step 6: Final answer
    x = 193,280.93

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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.