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Finding the Fourth Proportional to 307,372.50, 424,177.38 and 173,236.50

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Solution

The fourth proportional to 307,372.50, 424,177.38 and 173,236.50 is: 239,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,372.50 : 424,177.38 = 173,236.50 : x
  2. Step 2: Convert to fraction form
    307,372.50/424,177.38 = 173,236.50/x
  3. Step 3: Cross multiply
    307,372.50x = 424,177.38 × 173,236.50
  4. Step 4: Simplify right side
    307,372.50x = 73,483,004,690.37
  5. Step 5: Solve for x
    x = 73,483,004,690.37/307,372.50
  6. Step 6: Final answer
    x = 239,068.25

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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.