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Finding the Fourth Proportional to 268,485.40, 402,267.30 and 127,941.40

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Solution

The fourth proportional to 268,485.40, 402,267.30 and 127,941.40 is: 191,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,485.40 : 402,267.30 = 127,941.40 : x
  2. Step 2: Convert to fraction form
    268,485.40/402,267.30 = 127,941.40/x
  3. Step 3: Cross multiply
    268,485.40x = 402,267.30 × 127,941.40
  4. Step 4: Simplify right side
    268,485.40x = 51,466,641,536.22
  5. Step 5: Solve for x
    x = 51,466,641,536.22/268,485.40
  6. Step 6: Final answer
    x = 191,692.51

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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.