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Finding the Fourth Proportional to 382,145.40, 573,072.30 and 115,817.40

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Solution

The fourth proportional to 382,145.40, 573,072.30 and 115,817.40 is: 173,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,145.40 : 573,072.30 = 115,817.40 : x
  2. Step 2: Convert to fraction form
    382,145.40/573,072.30 = 115,817.40/x
  3. Step 3: Cross multiply
    382,145.40x = 573,072.30 × 115,817.40
  4. Step 4: Simplify right side
    382,145.40x = 66,371,743,798.02
  5. Step 5: Solve for x
    x = 66,371,743,798.02/382,145.40
  6. Step 6: Final answer
    x = 173,681.91

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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.