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Finding the Fourth Proportional to 307,999.40, 461,768.70 and 167,916.20

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Solution

The fourth proportional to 307,999.40, 461,768.70 and 167,916.20 is: 251,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,999.40 : 461,768.70 = 167,916.20 : x
  2. Step 2: Convert to fraction form
    307,999.40/461,768.70 = 167,916.20/x
  3. Step 3: Cross multiply
    307,999.40x = 461,768.70 × 167,916.20
  4. Step 4: Simplify right side
    307,999.40x = 77,538,445,382.94
  5. Step 5: Solve for x
    x = 77,538,445,382.94/307,999.40
  6. Step 6: Final answer
    x = 251,748.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.