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Finding the Fourth Proportional to 279,489.88, 385,703.94 and 152,167.60

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Solution

The fourth proportional to 279,489.88, 385,703.94 and 152,167.60 is: 209,995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,489.88 : 385,703.94 = 152,167.60 : x
  2. Step 2: Convert to fraction form
    279,489.88/385,703.94 = 152,167.60/x
  3. Step 3: Cross multiply
    279,489.88x = 385,703.94 × 152,167.60
  4. Step 4: Simplify right side
    279,489.88x = 58,691,642,860.34
  5. Step 5: Solve for x
    x = 58,691,642,860.34/279,489.88
  6. Step 6: Final answer
    x = 209,995.59

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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.