Home / 307,972.40-425,131.56-187,152.56

Finding the Fourth Proportional to 307,972.40, 425,131.56 and 187,152.56

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Solution

The fourth proportional to 307,972.40, 425,131.56 and 187,152.56 is: 258,349.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,972.40 : 425,131.56 = 187,152.56 : x
  2. Step 2: Convert to fraction form
    307,972.40/425,131.56 = 187,152.56/x
  3. Step 3: Cross multiply
    307,972.40x = 425,131.56 × 187,152.56
  4. Step 4: Simplify right side
    307,972.40x = 79,564,459,790.79
  5. Step 5: Solve for x
    x = 79,564,459,790.79/307,972.40
  6. Step 6: Final answer
    x = 258,349.32

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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.