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Finding the Fourth Proportional to 203,580.70, 280,941.12 and 112,950.40

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Solution

The fourth proportional to 203,580.70, 280,941.12 and 112,950.40 is: 155,871.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,580.70 : 280,941.12 = 112,950.40 : x
  2. Step 2: Convert to fraction form
    203,580.70/280,941.12 = 112,950.40/x
  3. Step 3: Cross multiply
    203,580.70x = 280,941.12 × 112,950.40
  4. Step 4: Simplify right side
    203,580.70x = 31,732,411,880.45
  5. Step 5: Solve for x
    x = 31,732,411,880.45/203,580.70
  6. Step 6: Final answer
    x = 155,871.42

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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.