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Finding the Fourth Proportional to 262,434.60, 393,690.30 and 84,911.40

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Solution

The fourth proportional to 262,434.60, 393,690.30 and 84,911.40 is: 127,379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,434.60 : 393,690.30 = 84,911.40 : x
  2. Step 2: Convert to fraction form
    262,434.60/393,690.30 = 84,911.40/x
  3. Step 3: Cross multiply
    262,434.60x = 393,690.30 × 84,911.40
  4. Step 4: Simplify right side
    262,434.60x = 33,428,794,539.42
  5. Step 5: Solve for x
    x = 33,428,794,539.42/262,434.60
  6. Step 6: Final answer
    x = 127,379.52

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1.5x scale

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.