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Finding the Fourth Proportional to 307,997.42, 425,023.74 and 172,030.73

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Solution

The fourth proportional to 307,997.42, 425,023.74 and 172,030.73 is: 237,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,997.42 : 425,023.74 = 172,030.73 : x
  2. Step 2: Convert to fraction form
    307,997.42/425,023.74 = 172,030.73/x
  3. Step 3: Cross multiply
    307,997.42x = 425,023.74 × 172,030.73
  4. Step 4: Simplify right side
    307,997.42x = 73,117,144,259.53
  5. Step 5: Solve for x
    x = 73,117,144,259.53/307,997.42
  6. Step 6: Final answer
    x = 237,395.31

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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.