Home / 405,677.57-608,549.15-139,438.26

Finding the Fourth Proportional to 405,677.57, 608,549.15 and 139,438.26

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Solution

The fourth proportional to 405,677.57, 608,549.15 and 139,438.26 is: 209,168.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,677.57 : 608,549.15 = 139,438.26 : x
  2. Step 2: Convert to fraction form
    405,677.57/608,549.15 = 139,438.26/x
  3. Step 3: Cross multiply
    405,677.57x = 608,549.15 × 139,438.26
  4. Step 4: Simplify right side
    405,677.57x = 84,855,034,949.07
  5. Step 5: Solve for x
    x = 84,855,034,949.07/405,677.57
  6. Step 6: Final answer
    x = 209,168.67

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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.