Home / 285,561.12-394,065.74-156,498.02

Finding the Fourth Proportional to 285,561.12, 394,065.74 and 156,498.02

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Solution

The fourth proportional to 285,561.12, 394,065.74 and 156,498.02 is: 215,962.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,561.12 : 394,065.74 = 156,498.02 : x
  2. Step 2: Convert to fraction form
    285,561.12/394,065.74 = 156,498.02/x
  3. Step 3: Cross multiply
    285,561.12x = 394,065.74 × 156,498.02
  4. Step 4: Simplify right side
    285,561.12x = 61,670,505,307.02
  5. Step 5: Solve for x
    x = 61,670,505,307.02/285,561.12
  6. Step 6: Final answer
    x = 215,962.54

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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.