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Finding the Fourth Proportional to 638,308.96, 957,252.64 and 211,746.72

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Solution

The fourth proportional to 638,308.96, 957,252.64 and 211,746.72 is: 317,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,308.96 : 957,252.64 = 211,746.72 : x
  2. Step 2: Convert to fraction form
    638,308.96/957,252.64 = 211,746.72/x
  3. Step 3: Cross multiply
    638,308.96x = 957,252.64 × 211,746.72
  4. Step 4: Simplify right side
    638,308.96x = 202,695,106,731.34
  5. Step 5: Solve for x
    x = 202,695,106,731.34/638,308.96
  6. Step 6: Final answer
    x = 317,550.15

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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.