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Finding the Fourth Proportional to 279,460.36, 385,708.44 and 158,612.96

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Solution

The fourth proportional to 279,460.36, 385,708.44 and 158,612.96 is: 218,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,460.36 : 385,708.44 = 158,612.96 : x
  2. Step 2: Convert to fraction form
    279,460.36/385,708.44 = 158,612.96/x
  3. Step 3: Cross multiply
    279,460.36x = 385,708.44 × 158,612.96
  4. Step 4: Simplify right side
    279,460.36x = 61,178,357,365.38
  5. Step 5: Solve for x
    x = 61,178,357,365.38/279,460.36
  6. Step 6: Final answer
    x = 218,916.05

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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.