Home / 317,458.29-438,112.14-209,841.69

Finding the Fourth Proportional to 317,458.29, 438,112.14 and 209,841.69

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Solution

The fourth proportional to 317,458.29, 438,112.14 and 209,841.69 is: 289,594.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,458.29 : 438,112.14 = 209,841.69 : x
  2. Step 2: Convert to fraction form
    317,458.29/438,112.14 = 209,841.69/x
  3. Step 3: Cross multiply
    317,458.29x = 438,112.14 × 209,841.69
  4. Step 4: Simplify right side
    317,458.29x = 91,934,191,867.12
  5. Step 5: Solve for x
    x = 91,934,191,867.12/317,458.29
  6. Step 6: Final answer
    x = 289,594.55

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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.