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Finding the Fourth Proportional to 258,008.67, 356,039.88 and 143,294.71

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Solution

The fourth proportional to 258,008.67, 356,039.88 and 143,294.71 is: 197,739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,008.67 : 356,039.88 = 143,294.71 : x
  2. Step 2: Convert to fraction form
    258,008.67/356,039.88 = 143,294.71/x
  3. Step 3: Cross multiply
    258,008.67x = 356,039.88 × 143,294.71
  4. Step 4: Simplify right side
    258,008.67x = 51,018,631,353.03
  5. Step 5: Solve for x
    x = 51,018,631,353.03/258,008.67
  6. Step 6: Final answer
    x = 197,739.99

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1.5x scale

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.