Home / 253,781.10-380,677.73-85,307.18

Finding the Fourth Proportional to 253,781.10, 380,677.73 and 85,307.18

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Solution

The fourth proportional to 253,781.10, 380,677.73 and 85,307.18 is: 127,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,781.10 : 380,677.73 = 85,307.18 : x
  2. Step 2: Convert to fraction form
    253,781.10/380,677.73 = 85,307.18/x
  3. Step 3: Cross multiply
    253,781.10x = 380,677.73 × 85,307.18
  4. Step 4: Simplify right side
    253,781.10x = 32,474,541,305.18
  5. Step 5: Solve for x
    x = 32,474,541,305.18/253,781.10
  6. Step 6: Final answer
    x = 127,962.80

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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.