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Finding the Fourth Proportional to 317,634.64, 438,278.62 and 179,812.63

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Solution

The fourth proportional to 317,634.64, 438,278.62 and 179,812.63 is: 248,109.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,634.64 : 438,278.62 = 179,812.63 : x
  2. Step 2: Convert to fraction form
    317,634.64/438,278.62 = 179,812.63/x
  3. Step 3: Cross multiply
    317,634.64x = 438,278.62 × 179,812.63
  4. Step 4: Simplify right side
    317,634.64x = 78,808,031,334.97
  5. Step 5: Solve for x
    x = 78,808,031,334.97/317,634.64
  6. Step 6: Final answer
    x = 248,109.06

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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.