Home / 402,972.02-556,083.85-221,672.45

Finding the Fourth Proportional to 402,972.02, 556,083.85 and 221,672.45

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Solution

The fourth proportional to 402,972.02, 556,083.85 and 221,672.45 is: 305,898.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,972.02 : 556,083.85 = 221,672.45 : x
  2. Step 2: Convert to fraction form
    402,972.02/556,083.85 = 221,672.45/x
  3. Step 3: Cross multiply
    402,972.02x = 556,083.85 × 221,672.45
  4. Step 4: Simplify right side
    402,972.02x = 123,268,468,326.57
  5. Step 5: Solve for x
    x = 123,268,468,326.57/402,972.02
  6. Step 6: Final answer
    x = 305,898.33

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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.