Home / 458,754.18-688,131.28-143,238.12

Finding the Fourth Proportional to 458,754.18, 688,131.28 and 143,238.12

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Solution

The fourth proportional to 458,754.18, 688,131.28 and 143,238.12 is: 214,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,754.18 : 688,131.28 = 143,238.12 : x
  2. Step 2: Convert to fraction form
    458,754.18/688,131.28 = 143,238.12/x
  3. Step 3: Cross multiply
    458,754.18x = 688,131.28 × 143,238.12
  4. Step 4: Simplify right side
    458,754.18x = 98,566,630,860.39
  5. Step 5: Solve for x
    x = 98,566,630,860.39/458,754.18
  6. Step 6: Final answer
    x = 214,857.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.