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Finding the Fourth Proportional to 442,764.21, 611,172.36 and 261,476.88

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Solution

The fourth proportional to 442,764.21, 611,172.36 and 261,476.88 is: 360,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,764.21 : 611,172.36 = 261,476.88 : x
  2. Step 2: Convert to fraction form
    442,764.21/611,172.36 = 261,476.88/x
  3. Step 3: Cross multiply
    442,764.21x = 611,172.36 × 261,476.88
  4. Step 4: Simplify right side
    442,764.21x = 159,807,441,835.04
  5. Step 5: Solve for x
    x = 159,807,441,835.04/442,764.21
  6. Step 6: Final answer
    x = 360,931.25

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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.