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Finding the Fourth Proportional to 316,362.82, 436,580.71 and 173,122.87

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Solution

The fourth proportional to 316,362.82, 436,580.71 and 173,122.87 is: 238,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,362.82 : 436,580.71 = 173,122.87 : x
  2. Step 2: Convert to fraction form
    316,362.82/436,580.71 = 173,122.87/x
  3. Step 3: Cross multiply
    316,362.82x = 436,580.71 × 173,122.87
  4. Step 4: Simplify right side
    316,362.82x = 75,582,103,318.93
  5. Step 5: Solve for x
    x = 75,582,103,318.93/316,362.82
  6. Step 6: Final answer
    x = 238,909.57

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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.