Home / 391,219.02-539,895.54-219,144.36

Finding the Fourth Proportional to 391,219.02, 539,895.54 and 219,144.36

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Solution

The fourth proportional to 391,219.02, 539,895.54 and 219,144.36 is: 302,426.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,219.02 : 539,895.54 = 219,144.36 : x
  2. Step 2: Convert to fraction form
    391,219.02/539,895.54 = 219,144.36/x
  3. Step 3: Cross multiply
    391,219.02x = 539,895.54 × 219,144.36
  4. Step 4: Simplify right side
    391,219.02x = 118,315,062,580.15
  5. Step 5: Solve for x
    x = 118,315,062,580.15/391,219.02
  6. Step 6: Final answer
    x = 302,426.66

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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.