Home / 402,727.55-555,749.79-221,438.21

Finding the Fourth Proportional to 402,727.55, 555,749.79 and 221,438.21

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Solution

The fourth proportional to 402,727.55, 555,749.79 and 221,438.21 is: 305,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,727.55 : 555,749.79 = 221,438.21 : x
  2. Step 2: Convert to fraction form
    402,727.55/555,749.79 = 221,438.21/x
  3. Step 3: Cross multiply
    402,727.55x = 555,749.79 × 221,438.21
  4. Step 4: Simplify right side
    402,727.55x = 123,064,238,705.48
  5. Step 5: Solve for x
    x = 123,064,238,705.48/402,727.55
  6. Step 6: Final answer
    x = 305,576.91

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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.