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Finding the Fourth Proportional to 317,538.72, 475,633.37 and 215,018.34

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Solution

The fourth proportional to 317,538.72, 475,633.37 and 215,018.34 is: 322,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,538.72 : 475,633.37 = 215,018.34 : x
  2. Step 2: Convert to fraction form
    317,538.72/475,633.37 = 215,018.34/x
  3. Step 3: Cross multiply
    317,538.72x = 475,633.37 × 215,018.34
  4. Step 4: Simplify right side
    317,538.72x = 102,269,896,590.91
  5. Step 5: Solve for x
    x = 102,269,896,590.91/317,538.72
  6. Step 6: Final answer
    x = 322,070.63

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1.5x scale

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.