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Finding the Fourth Proportional to 317,804.70, 438,573.66 and 172,613.34

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Solution

The fourth proportional to 317,804.70, 438,573.66 and 172,613.34 is: 238,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,804.70 : 438,573.66 = 172,613.34 : x
  2. Step 2: Convert to fraction form
    317,804.70/438,573.66 = 172,613.34/x
  3. Step 3: Cross multiply
    317,804.70x = 438,573.66 × 172,613.34
  4. Step 4: Simplify right side
    317,804.70x = 75,703,664,288.62
  5. Step 5: Solve for x
    x = 75,703,664,288.62/317,804.70
  6. Step 6: Final answer
    x = 238,208.13

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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.