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Finding the Fourth Proportional to 556,618.14, 834,407.70 and 219,661.56

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Solution

The fourth proportional to 556,618.14, 834,407.70 and 219,661.56 is: 329,287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,618.14 : 834,407.70 = 219,661.56 : x
  2. Step 2: Convert to fraction form
    556,618.14/834,407.70 = 219,661.56/x
  3. Step 3: Cross multiply
    556,618.14x = 834,407.70 × 219,661.56
  4. Step 4: Simplify right side
    556,618.14x = 183,287,297,058.01
  5. Step 5: Solve for x
    x = 183,287,297,058.01/556,618.14
  6. Step 6: Final answer
    x = 329,287.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.