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Finding the Fourth Proportional to 316,679.41, 437,018.25 and 171,486.78

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Solution

The fourth proportional to 316,679.41, 437,018.25 and 171,486.78 is: 236,652.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,679.41 : 437,018.25 = 171,486.78 : x
  2. Step 2: Convert to fraction form
    316,679.41/437,018.25 = 171,486.78/x
  3. Step 3: Cross multiply
    316,679.41x = 437,018.25 × 171,486.78
  4. Step 4: Simplify right side
    316,679.41x = 74,942,852,493.74
  5. Step 5: Solve for x
    x = 74,942,852,493.74/316,679.41
  6. Step 6: Final answer
    x = 236,652.12

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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.