Home / 228,209.40-342,314.10-139,635.90

Finding the Fourth Proportional to 228,209.40, 342,314.10 and 139,635.90

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Solution

The fourth proportional to 228,209.40, 342,314.10 and 139,635.90 is: 209,453.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,209.40 : 342,314.10 = 139,635.90 : x
  2. Step 2: Convert to fraction form
    228,209.40/342,314.10 = 139,635.90/x
  3. Step 3: Cross multiply
    228,209.40x = 342,314.10 × 139,635.90
  4. Step 4: Simplify right side
    228,209.40x = 47,799,337,436.19
  5. Step 5: Solve for x
    x = 47,799,337,436.19/228,209.40
  6. Step 6: Final answer
    x = 209,453.85

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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.