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Finding the Fourth Proportional to 279,344.51, 385,504.17 and 158,490.89

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Solution

The fourth proportional to 279,344.51, 385,504.17 and 158,490.89 is: 218,722.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,344.51 : 385,504.17 = 158,490.89 : x
  2. Step 2: Convert to fraction form
    279,344.51/385,504.17 = 158,490.89/x
  3. Step 3: Cross multiply
    279,344.51x = 385,504.17 × 158,490.89
  4. Step 4: Simplify right side
    279,344.51x = 61,098,897,074.49
  5. Step 5: Solve for x
    x = 61,098,897,074.49/279,344.51
  6. Step 6: Final answer
    x = 218,722.39

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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.