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Finding the Fourth Proportional to 395,985.96, 594,038.21 and 143,325.56

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Solution

The fourth proportional to 395,985.96, 594,038.21 and 143,325.56 is: 215,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,985.96 : 594,038.21 = 143,325.56 : x
  2. Step 2: Convert to fraction form
    395,985.96/594,038.21 = 143,325.56/x
  3. Step 3: Cross multiply
    395,985.96x = 594,038.21 × 143,325.56
  4. Step 4: Simplify right side
    395,985.96x = 85,140,860,594.74
  5. Step 5: Solve for x
    x = 85,140,860,594.74/395,985.96
  6. Step 6: Final answer
    x = 215,009.80

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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.