Home / 307,313.28-423,127.29-261,282.40

Finding the Fourth Proportional to 307,313.28, 423,127.29 and 261,282.40

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Solution

The fourth proportional to 307,313.28, 423,127.29 and 261,282.40 is: 359,749.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,313.28 : 423,127.29 = 261,282.40 : x
  2. Step 2: Convert to fraction form
    307,313.28/423,127.29 = 261,282.40/x
  3. Step 3: Cross multiply
    307,313.28x = 423,127.29 × 261,282.40
  4. Step 4: Simplify right side
    307,313.28x = 110,555,713,836.70
  5. Step 5: Solve for x
    x = 110,555,713,836.70/307,313.28
  6. Step 6: Final answer
    x = 359,749.22

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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.