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Finding the Fourth Proportional to 307,551.48, 424,421.10 and 173,415.48

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Solution

The fourth proportional to 307,551.48, 424,421.10 and 173,415.48 is: 239,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,551.48 : 424,421.10 = 173,415.48 : x
  2. Step 2: Convert to fraction form
    307,551.48/424,421.10 = 173,415.48/x
  3. Step 3: Cross multiply
    307,551.48x = 424,421.10 × 173,415.48
  4. Step 4: Simplify right side
    307,551.48x = 73,601,188,778.63
  5. Step 5: Solve for x
    x = 73,601,188,778.63/307,551.48
  6. Step 6: Final answer
    x = 239,313.39

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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.