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Finding the Fourth Proportional to 458,754.06, 688,131.08 and 143,238

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Solution

The fourth proportional to 458,754.06, 688,131.08 and 143,238 is: 214,857.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,754.06 : 688,131.08 = 143,238 : x
  2. Step 2: Convert to fraction form
    458,754.06/688,131.08 = 143,238/x
  3. Step 3: Cross multiply
    458,754.06x = 688,131.08 × 143,238
  4. Step 4: Simplify right side
    458,754.06x = 98,566,518,920.85
  5. Step 5: Solve for x
    x = 98,566,518,920.85/458,754.06
  6. Step 6: Final answer
    x = 214,857.00

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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.