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Finding the Fourth Proportional to 317,697.41, 438,427.45 and 172,503.11

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Solution

The fourth proportional to 317,697.41, 438,427.45 and 172,503.11 is: 238,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,697.41 : 438,427.45 = 172,503.11 : x
  2. Step 2: Convert to fraction form
    317,697.41/438,427.45 = 172,503.11/x
  3. Step 3: Cross multiply
    317,697.41x = 438,427.45 × 172,503.11
  4. Step 4: Simplify right side
    317,697.41x = 75,630,096,010.97
  5. Step 5: Solve for x
    x = 75,630,096,010.97/317,697.41
  6. Step 6: Final answer
    x = 238,057.02

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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.