Home / 307,247.18-423,638.43-210,497.42

Finding the Fourth Proportional to 307,247.18, 423,638.43 and 210,497.42

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Solution

The fourth proportional to 307,247.18, 423,638.43 and 210,497.42 is: 290,237.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,247.18 : 423,638.43 = 210,497.42 : x
  2. Step 2: Convert to fraction form
    307,247.18/423,638.43 = 210,497.42/x
  3. Step 3: Cross multiply
    307,247.18x = 423,638.43 × 210,497.42
  4. Step 4: Simplify right side
    307,247.18x = 89,174,796,527.85
  5. Step 5: Solve for x
    x = 89,174,796,527.85/307,247.18
  6. Step 6: Final answer
    x = 290,237.97

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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.