Home / 439,207.12-658,803.75-139,683.37

Finding the Fourth Proportional to 439,207.12, 658,803.75 and 139,683.37

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Solution

The fourth proportional to 439,207.12, 658,803.75 and 139,683.37 is: 209,522.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,207.12 : 658,803.75 = 139,683.37 : x
  2. Step 2: Convert to fraction form
    439,207.12/658,803.75 = 139,683.37/x
  3. Step 3: Cross multiply
    439,207.12x = 658,803.75 × 139,683.37
  4. Step 4: Simplify right side
    439,207.12x = 92,023,927,968.64
  5. Step 5: Solve for x
    x = 92,023,927,968.64/439,207.12
  6. Step 6: Final answer
    x = 209,522.85

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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.