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Finding the Fourth Proportional to 222,583.40, 333,875.10 and 139,639.40

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Solution

The fourth proportional to 222,583.40, 333,875.10 and 139,639.40 is: 209,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,583.40 : 333,875.10 = 139,639.40 : x
  2. Step 2: Convert to fraction form
    222,583.40/333,875.10 = 139,639.40/x
  3. Step 3: Cross multiply
    222,583.40x = 333,875.10 × 139,639.40
  4. Step 4: Simplify right side
    222,583.40x = 46,622,118,638.94
  5. Step 5: Solve for x
    x = 46,622,118,638.94/222,583.40
  6. Step 6: Final answer
    x = 209,459.10

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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.