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Finding the Fourth Proportional to 317,447.37, 438,082.76 and 174,220.74

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Solution

The fourth proportional to 317,447.37, 438,082.76 and 174,220.74 is: 240,427.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,447.37 : 438,082.76 = 174,220.74 : x
  2. Step 2: Convert to fraction form
    317,447.37/438,082.76 = 174,220.74/x
  3. Step 3: Cross multiply
    317,447.37x = 438,082.76 × 174,220.74
  4. Step 4: Simplify right side
    317,447.37x = 76,323,103,063.99
  5. Step 5: Solve for x
    x = 76,323,103,063.99/317,447.37
  6. Step 6: Final answer
    x = 240,427.58

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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.