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Finding the Fourth Proportional to 307,998.40, 461,767.20 and 167,915.20

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Solution

The fourth proportional to 307,998.40, 461,767.20 and 167,915.20 is: 251,747.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,998.40 : 461,767.20 = 167,915.20 : x
  2. Step 2: Convert to fraction form
    307,998.40/461,767.20 = 167,915.20/x
  3. Step 3: Cross multiply
    307,998.40x = 461,767.20 × 167,915.20
  4. Step 4: Simplify right side
    307,998.40x = 77,537,731,741.44
  5. Step 5: Solve for x
    x = 77,537,731,741.44/307,998.40
  6. Step 6: Final answer
    x = 251,747.19

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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.