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Finding the Fourth Proportional to 317,570.59, 438,231.34 and 188,514.59

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Solution

The fourth proportional to 317,570.59, 438,231.34 and 188,514.59 is: 260,140.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,570.59 : 438,231.34 = 188,514.59 : x
  2. Step 2: Convert to fraction form
    317,570.59/438,231.34 = 188,514.59/x
  3. Step 3: Cross multiply
    317,570.59x = 438,231.34 × 188,514.59
  4. Step 4: Simplify right side
    317,570.59x = 82,612,998,722.81
  5. Step 5: Solve for x
    x = 82,612,998,722.81/317,570.59
  6. Step 6: Final answer
    x = 260,140.59

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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.