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Finding the Fourth Proportional to 283,363.65, 391,040.73 and 156,039.03

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Solution

The fourth proportional to 283,363.65, 391,040.73 and 156,039.03 is: 215,333.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,363.65 : 391,040.73 = 156,039.03 : x
  2. Step 2: Convert to fraction form
    283,363.65/391,040.73 = 156,039.03/x
  3. Step 3: Cross multiply
    283,363.65x = 391,040.73 × 156,039.03
  4. Step 4: Simplify right side
    283,363.65x = 61,017,616,199.69
  5. Step 5: Solve for x
    x = 61,017,616,199.69/283,363.65
  6. Step 6: Final answer
    x = 215,333.25

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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.