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Finding the Fourth Proportional to 317,325.58, 476,112.84 and 139,708

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Solution

The fourth proportional to 317,325.58, 476,112.84 and 139,708 is: 209,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,325.58 : 476,112.84 = 139,708 : x
  2. Step 2: Convert to fraction form
    317,325.58/476,112.84 = 139,708/x
  3. Step 3: Cross multiply
    317,325.58x = 476,112.84 × 139,708
  4. Step 4: Simplify right side
    317,325.58x = 66,516,772,650.72
  5. Step 5: Solve for x
    x = 66,516,772,650.72/317,325.58
  6. Step 6: Final answer
    x = 209,616.80

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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.