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Finding the Fourth Proportional to 307,453.50, 424,285.84 and 173,317.50

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Solution

The fourth proportional to 307,453.50, 424,285.84 and 173,317.50 is: 239,178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,453.50 : 424,285.84 = 173,317.50 : x
  2. Step 2: Convert to fraction form
    307,453.50/424,285.84 = 173,317.50/x
  3. Step 3: Cross multiply
    307,453.50x = 424,285.84 × 173,317.50
  4. Step 4: Simplify right side
    307,453.50x = 73,536,161,074.20
  5. Step 5: Solve for x
    x = 73,536,161,074.20/307,453.50
  6. Step 6: Final answer
    x = 239,178.16

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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.