Home / 317,876.07-438,673.75-172,684.71

Finding the Fourth Proportional to 317,876.07, 438,673.75 and 172,684.71

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Solution

The fourth proportional to 317,876.07, 438,673.75 and 172,684.71 is: 238,307.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,876.07 : 438,673.75 = 172,684.71 : x
  2. Step 2: Convert to fraction form
    317,876.07/438,673.75 = 172,684.71/x
  3. Step 3: Cross multiply
    317,876.07x = 438,673.75 × 172,684.71
  4. Step 4: Simplify right side
    317,876.07x = 75,752,249,357.33
  5. Step 5: Solve for x
    x = 75,752,249,357.33/317,876.07
  6. Step 6: Final answer
    x = 238,307.49

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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.