Home / 281,938.45-422,969.95-139,861.00

Finding the Fourth Proportional to 281,938.45, 422,969.95 and 139,861.00

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Solution

The fourth proportional to 281,938.45, 422,969.95 and 139,861.00 is: 209,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,938.45 : 422,969.95 = 139,861.00 : x
  2. Step 2: Convert to fraction form
    281,938.45/422,969.95 = 139,861.00/x
  3. Step 3: Cross multiply
    281,938.45x = 422,969.95 × 139,861.00
  4. Step 4: Simplify right side
    281,938.45x = 59,157,002,070.09
  5. Step 5: Solve for x
    x = 59,157,002,070.09/281,938.45
  6. Step 6: Final answer
    x = 209,822.40

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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.