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Finding the Fourth Proportional to 317,135.89, 475,809.58 and 210,938.51

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Solution

The fourth proportional to 317,135.89, 475,809.58 and 210,938.51 is: 316,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,135.89 : 475,809.58 = 210,938.51 : x
  2. Step 2: Convert to fraction form
    317,135.89/475,809.58 = 210,938.51/x
  3. Step 3: Cross multiply
    317,135.89x = 475,809.58 × 210,938.51
  4. Step 4: Simplify right side
    317,135.89x = 100,366,564,112.60
  5. Step 5: Solve for x
    x = 100,366,564,112.60/317,135.89
  6. Step 6: Final answer
    x = 316,478.10

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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.