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Finding the Fourth Proportional to 203,292.41, 280,549.67 and 112,639.89

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Solution

The fourth proportional to 203,292.41, 280,549.67 and 112,639.89 is: 155,446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,292.41 : 280,549.67 = 112,639.89 : x
  2. Step 2: Convert to fraction form
    203,292.41/280,549.67 = 112,639.89/x
  3. Step 3: Cross multiply
    203,292.41x = 280,549.67 × 112,639.89
  4. Step 4: Simplify right side
    203,292.41x = 31,601,084,457.20
  5. Step 5: Solve for x
    x = 31,601,084,457.20/203,292.41
  6. Step 6: Final answer
    x = 155,446.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.