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Finding the Fourth Proportional to 638,115.88, 956,935.48 and 211,573.48

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Solution

The fourth proportional to 638,115.88, 956,935.48 and 211,573.48 is: 317,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,115.88 : 956,935.48 = 211,573.48 : x
  2. Step 2: Convert to fraction form
    638,115.88/956,935.48 = 211,573.48/x
  3. Step 3: Cross multiply
    638,115.88x = 956,935.48 × 211,573.48
  4. Step 4: Simplify right side
    638,115.88x = 202,462,169,639.07
  5. Step 5: Solve for x
    x = 202,462,169,639.07/638,115.88
  6. Step 6: Final answer
    x = 317,281.20

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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.