Home / 405,583.60-608,389.52-139,342.17

Finding the Fourth Proportional to 405,583.60, 608,389.52 and 139,342.17

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Solution

The fourth proportional to 405,583.60, 608,389.52 and 139,342.17 is: 209,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,583.60 : 608,389.52 = 139,342.17 : x
  2. Step 2: Convert to fraction form
    405,583.60/608,389.52 = 139,342.17/x
  3. Step 3: Cross multiply
    405,583.60x = 608,389.52 × 139,342.17
  4. Step 4: Simplify right side
    405,583.60x = 84,774,314,749.44
  5. Step 5: Solve for x
    x = 84,774,314,749.44/405,583.60
  6. Step 6: Final answer
    x = 209,018.10

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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.