Home / 402,669.09-555,683.69-221,384.12

Finding the Fourth Proportional to 402,669.09, 555,683.69 and 221,384.12

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Solution

The fourth proportional to 402,669.09, 555,683.69 and 221,384.12 is: 305,510.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,669.09 : 555,683.69 = 221,384.12 : x
  2. Step 2: Convert to fraction form
    402,669.09/555,683.69 = 221,384.12/x
  3. Step 3: Cross multiply
    402,669.09x = 555,683.69 × 221,384.12
  4. Step 4: Simplify right side
    402,669.09x = 123,019,542,484.05
  5. Step 5: Solve for x
    x = 123,019,542,484.05/402,669.09
  6. Step 6: Final answer
    x = 305,510.27

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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.