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Finding the Fourth Proportional to 262,311.84, 393,506.40 and 84,759.84

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Solution

The fourth proportional to 262,311.84, 393,506.40 and 84,759.84 is: 127,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,311.84 : 393,506.40 = 84,759.84 : x
  2. Step 2: Convert to fraction form
    262,311.84/393,506.40 = 84,759.84/x
  3. Step 3: Cross multiply
    262,311.84x = 393,506.40 × 84,759.84
  4. Step 4: Simplify right side
    262,311.84x = 33,353,539,502.98
  5. Step 5: Solve for x
    x = 33,353,539,502.98/262,311.84
  6. Step 6: Final answer
    x = 127,152.25

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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.