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Finding the Fourth Proportional to 307,485.50, 424,330.08 and 173,349.50

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Solution

The fourth proportional to 307,485.50, 424,330.08 and 173,349.50 is: 239,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,485.50 : 424,330.08 = 173,349.50 : x
  2. Step 2: Convert to fraction form
    307,485.50/424,330.08 = 173,349.50/x
  3. Step 3: Cross multiply
    307,485.50x = 424,330.08 × 173,349.50
  4. Step 4: Simplify right side
    307,485.50x = 73,557,407,202.96
  5. Step 5: Solve for x
    x = 73,557,407,202.96/307,485.50
  6. Step 6: Final answer
    x = 239,222.36

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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.