Home / 307,292.40-423,912.78-205,342.90

Finding the Fourth Proportional to 307,292.40, 423,912.78 and 205,342.90

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Solution

The fourth proportional to 307,292.40, 423,912.78 and 205,342.90 is: 283,272.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,292.40 : 423,912.78 = 205,342.90 : x
  2. Step 2: Convert to fraction form
    307,292.40/423,912.78 = 205,342.90/x
  3. Step 3: Cross multiply
    307,292.40x = 423,912.78 × 205,342.90
  4. Step 4: Simplify right side
    307,292.40x = 87,047,478,532.48
  5. Step 5: Solve for x
    x = 87,047,478,532.48/307,292.40
  6. Step 6: Final answer
    x = 283,272.47

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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.