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Finding the Fourth Proportional to 316,428.65, 436,669.94 and 171,234.33

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Solution

The fourth proportional to 316,428.65, 436,669.94 and 171,234.33 is: 236,302.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,428.65 : 436,669.94 = 171,234.33 : x
  2. Step 2: Convert to fraction form
    316,428.65/436,669.94 = 171,234.33/x
  3. Step 3: Cross multiply
    316,428.65x = 436,669.94 × 171,234.33
  4. Step 4: Simplify right side
    316,428.65x = 74,772,883,750.87
  5. Step 5: Solve for x
    x = 74,772,883,750.87/316,428.65
  6. Step 6: Final answer
    x = 236,302.51

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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.