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Finding the Fourth Proportional to 285,281.40, 393,591.42 and 164,418.84

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Solution

The fourth proportional to 285,281.40, 393,591.42 and 164,418.84 is: 226,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,281.40 : 393,591.42 = 164,418.84 : x
  2. Step 2: Convert to fraction form
    285,281.40/393,591.42 = 164,418.84/x
  3. Step 3: Cross multiply
    285,281.40x = 393,591.42 × 164,418.84
  4. Step 4: Simplify right side
    285,281.40x = 64,713,844,710.35
  5. Step 5: Solve for x
    x = 64,713,844,710.35/285,281.40
  6. Step 6: Final answer
    x = 226,842.15

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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.