Home / 402,936.12-556,061.22-221,658.12

Finding the Fourth Proportional to 402,936.12, 556,061.22 and 221,658.12

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Solution

The fourth proportional to 402,936.12, 556,061.22 and 221,658.12 is: 305,893.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,936.12 : 556,061.22 = 221,658.12 : x
  2. Step 2: Convert to fraction form
    402,936.12/556,061.22 = 221,658.12/x
  3. Step 3: Cross multiply
    402,936.12x = 556,061.22 × 221,658.12
  4. Step 4: Simplify right side
    402,936.12x = 123,255,484,630.11
  5. Step 5: Solve for x
    x = 123,255,484,630.11/402,936.12
  6. Step 6: Final answer
    x = 305,893.36

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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.