Home / 279,569.12-385,821.60-210,535

Finding the Fourth Proportional to 279,569.12, 385,821.60 and 210,535

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Solution

The fourth proportional to 279,569.12, 385,821.60 and 210,535 is: 290,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,569.12 : 385,821.60 = 210,535 : x
  2. Step 2: Convert to fraction form
    279,569.12/385,821.60 = 210,535/x
  3. Step 3: Cross multiply
    279,569.12x = 385,821.60 × 210,535
  4. Step 4: Simplify right side
    279,569.12x = 81,228,950,556
  5. Step 5: Solve for x
    x = 81,228,950,556/279,569.12
  6. Step 6: Final answer
    x = 290,550.51

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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.