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Finding the Fourth Proportional to 317,578.82, 438,242.66 and 188,522.82

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Solution

The fourth proportional to 317,578.82, 438,242.66 and 188,522.82 is: 260,151.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,578.82 : 438,242.66 = 188,522.82 : x
  2. Step 2: Convert to fraction form
    317,578.82/438,242.66 = 188,522.82/x
  3. Step 3: Cross multiply
    317,578.82x = 438,242.66 × 188,522.82
  4. Step 4: Simplify right side
    317,578.82x = 82,618,742,107.50
  5. Step 5: Solve for x
    x = 82,618,742,107.50/317,578.82
  6. Step 6: Final answer
    x = 260,151.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.