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Finding the Fourth Proportional to 317,774.86, 438,422.61 and 179,934.95

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Solution

The fourth proportional to 317,774.86, 438,422.61 and 179,934.95 is: 248,249.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,774.86 : 438,422.61 = 179,934.95 : x
  2. Step 2: Convert to fraction form
    317,774.86/438,422.61 = 179,934.95/x
  3. Step 3: Cross multiply
    317,774.86x = 438,422.61 × 179,934.95
  4. Step 4: Simplify right side
    317,774.86x = 78,887,547,317.43
  5. Step 5: Solve for x
    x = 78,887,547,317.43/317,774.86
  6. Step 6: Final answer
    x = 248,249.81

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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.