Home / 285,384.12-393,832.98-172,185

Finding the Fourth Proportional to 285,384.12, 393,832.98 and 172,185

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Solution

The fourth proportional to 285,384.12, 393,832.98 and 172,185 is: 237,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,384.12 : 393,832.98 = 172,185 : x
  2. Step 2: Convert to fraction form
    285,384.12/393,832.98 = 172,185/x
  3. Step 3: Cross multiply
    285,384.12x = 393,832.98 × 172,185
  4. Step 4: Simplify right side
    285,384.12x = 67,812,131,661.30
  5. Step 5: Solve for x
    x = 67,812,131,661.30/285,384.12
  6. Step 6: Final answer
    x = 237,617.05

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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.