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Finding the Fourth Proportional to 402,576.49, 555,549.33 and 221,284.54

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Solution

The fourth proportional to 402,576.49, 555,549.33 and 221,284.54 is: 305,369.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,576.49 : 555,549.33 = 221,284.54 : x
  2. Step 2: Convert to fraction form
    402,576.49/555,549.33 = 221,284.54/x
  3. Step 3: Cross multiply
    402,576.49x = 555,549.33 × 221,284.54
  4. Step 4: Simplify right side
    402,576.49x = 122,934,477,936.36
  5. Step 5: Solve for x
    x = 122,934,477,936.36/402,576.49
  6. Step 6: Final answer
    x = 305,369.24

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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.