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Finding the Fourth Proportional to 279,585.77, 385,844.51 and 210,551.63

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Solution

The fourth proportional to 279,585.77, 385,844.51 and 210,551.63 is: 290,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,585.77 : 385,844.51 = 210,551.63 : x
  2. Step 2: Convert to fraction form
    279,585.77/385,844.51 = 210,551.63/x
  3. Step 3: Cross multiply
    279,585.77x = 385,844.51 × 210,551.63
  4. Step 4: Simplify right side
    279,585.77x = 81,240,189,454.29
  5. Step 5: Solve for x
    x = 81,240,189,454.29/279,585.77
  6. Step 6: Final answer
    x = 290,573.41

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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.