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Finding the Fourth Proportional to 307,564.70, 424,439.60 and 180,240.39

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Solution

The fourth proportional to 307,564.70, 424,439.60 and 180,240.39 is: 248,731.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,564.70 : 424,439.60 = 180,240.39 : x
  2. Step 2: Convert to fraction form
    307,564.70/424,439.60 = 180,240.39/x
  3. Step 3: Cross multiply
    307,564.70x = 424,439.60 × 180,240.39
  4. Step 4: Simplify right side
    307,564.70x = 76,501,158,134.24
  5. Step 5: Solve for x
    x = 76,501,158,134.24/307,564.70
  6. Step 6: Final answer
    x = 248,731.92

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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.