Home / 393,039.02-542,364.01-220,929.61

Finding the Fourth Proportional to 393,039.02, 542,364.01 and 220,929.61

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Solution

The fourth proportional to 393,039.02, 542,364.01 and 220,929.61 is: 304,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,039.02 : 542,364.01 = 220,929.61 : x
  2. Step 2: Convert to fraction form
    393,039.02/542,364.01 = 220,929.61/x
  3. Step 3: Cross multiply
    393,039.02x = 542,364.01 × 220,929.61
  4. Step 4: Simplify right side
    393,039.02x = 119,824,269,207.34
  5. Step 5: Solve for x
    x = 119,824,269,207.34/393,039.02
  6. Step 6: Final answer
    x = 304,866.09

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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.