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Finding the Fourth Proportional to 323,595.41, 485,360.31 and 86,907.34

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Solution

The fourth proportional to 323,595.41, 485,360.31 and 86,907.34 is: 130,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,595.41 : 485,360.31 = 86,907.34 : x
  2. Step 2: Convert to fraction form
    323,595.41/485,360.31 = 86,907.34/x
  3. Step 3: Cross multiply
    323,595.41x = 485,360.31 × 86,907.34
  4. Step 4: Simplify right side
    323,595.41x = 42,181,373,483.68
  5. Step 5: Solve for x
    x = 42,181,373,483.68/323,595.41
  6. Step 6: Final answer
    x = 130,352.20

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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.